What to Plant in a Warming World
With springtime in the air and the days getting longer, you may well be daydreaming about your garden or flower bed and the quiet weekend hours you hope to spend there in the weeks to come. But knowing what to plant as temperatures climb and precipitation patterns change around the world can be a challenge.
The planet just experienced the hottest decade (2010-2019) on record, according to NOAA, with 2019 itself ranking second-warmest year ever recorded.
At the same time, climate change's impact on precipitation patterns around the world has become a case of feast or famine. Warming is fundamentally altering the water cycle and shifting precipitation patterns. In many areas, rainfall has become either increasingly abundant or in desperately short supply, relative to longtime averages.
As we saw in Australia earlier this year, drought exacerbated by the climate crisis can lead to devastating wildfires. Elsewhere, in places like the American Midwest, extreme rainfall events are becoming more frequent, resulting in major agricultural losses that make the food supply we all depend on less secure.
That's some pretty heady stuff for a blog about gardening, we know. But it's vital to understand that when it comes to the climate crisis, business as usual will not cut it. Anywhere. Not in electricity production. Not in industry. Not in transportation. And certainly not in agriculture — right down to a home garden or flower bed.
Some plants are better suited to extended periods of high heat than others, while many can survive on less water (or conversely, can handle a little too much for a bit longer) than their pricklier peers.
Below, we've put together a few key tips on how you can adapt your landscape using plants better-suited for climate impacts in your area. As always, be sure to research what plant species are native to your region before buying and planting — your local biodiversity and natural resources, as well as the plants themselves, will thank you.
When it comes to our changing climate, it's fairly safe to "expect the wet to get wetter, and the dry, drier."
If the region you live in is already a fairly dry one — like, say, the American West, Middle East and North Africa, and much of Australia — you're likely to experience even drier conditions and occasional drought as the world continues to warm.
These concerns, of course, have far larger implications than what you plant in the beds around your front porch or in your backyard. But that's not to say picking the right plants for your particular changing climate has no role at all in making you a better steward of natural resources at a time when it matters more than ever.
As just one example, according to the EPA, outdoor water use, including the watering of lawns and gardens, accounts for about 30 percent of all residential water use in the U.S., and that number "can be much higher in drier parts of the country and in more water-intensive landscapes." So it makes sense that opting for plants that are able to thrive in drier conditions can also help rein in your home water use at a time when water resources can become strained.
But which plants are less thirsty and more resilient during periods of drought?
Lavender is a particularly popular — and wonderfully fragrant — common plant that "has evolved to subsist on little water."
Cushion spurge (Euphorbia), with its pale green leaves and yellow bracts, is an especially good drought-tolerant plant for gardens in cooler climes. And ornamental grasses tend to be both aesthetically pleasing and drought tolerant, more generally. Feather reed grass, blue fescue, fountain grass, and big bluestem (called "Monarch of the Prairie" by some), in particular, will all survive periods of water shortage while still looking great.
If more conventional flowers are your thing, consider peonies, geraniums, butterfly weed, baby's breath, sedum, and coneflower, all of which require a bit less water than many other common garden flowers.
It's important to note that the perennials above are only truly drought-tolerant once they have been fully established. This means that in their first and sometimes second years, they will require a little more water and care. And as with all plants, if you are in the U.S., you should check to make sure it is a good fit for your USDA Hardiness Zone.
"Worldwide, since 1880 the average surface temperature [on Earth] has risen about 1° C (about 2° F), relative to the mid-20th-century baseline (of 1951-1980)," according to NASA.
It's important to remember that's a worldwide average; many regions have experienced more warming than this on the ground. But any change in temperatures can and will change where a plant can be grown — and some plants are better able to deal with periods of extreme heat than others.
A few of the plants mentioned above as being drought-tolerant can also deal pretty well with higher temperatures, including butterfly weed and purple coneflower.
Celosia, with its bright, feathery orange, purple, yellow, red, and white plumes, is a favorite for many American gardeners — and is well-known to "remain upright and strong even in sizzling heat."
And zinnias, gaillardia, purslane, and cosmos are all prolific, heat-loving annuals.
When it comes to perennials and other shrubs, if you live in a largely temperate area that experiences occasional periods of high heat, consider adding viburnum to your landscape. Its fragrant clusters of delicate white blossoms arrive fairly early in the season, often in May and June, and it does a famously good job of standing up to late-summer heat, providing birds and other wildlife refuge in the shade created by its eight-to-10-foot average height and broad, leafy boughs.
Yucca, a broadleaf evergreen, is native to some of the warmest and driest parts of North America, so it's no surprise that, according to Bob Vila, "When other plants begin to wilt in the heat, yucca stands tall and strong."
For a smaller shrub that does particularly well with higher humidity (it is a longtime stalwart in gardens across the American South), consider lantana.
Like we said earlier, "expect the wet to get wetter, and the dry, drier."
Put as simply as possible, climate change impacts our weather largely by putting our water cycle into overdrive. As temperatures around the globe climb, water from land and sea is evaporating faster. Making matters worse: Warmer air can hold more water vapor.
More water in our atmosphere means more intense precipitation and more intense storms. It's called a cycle for a reason.
So, if you are in a region experiencing more and more precipitation, and are looking for a great way to soak up some of the extra rain while keeping your landscape looking great, consider a "rain garden."
But wait. What's a "rain garden"?
"A rain garden is a garden of native shrubs, perennials, and flowers planted in a small depression, which is generally formed on a natural slope. It is designed to temporarily hold and soak in rain water runoff that flows from roofs, driveways, patios or lawns," according to Groundwater.org. "Rain gardens are effective in removing up to 90 percent of nutrients and chemicals and up to 80 percent of sediments from the rainwater runoff. Compared to a conventional lawn, rain gardens allow for 30 percent more water to soak into the ground."
It's important to note that rain gardens are not ponds, water gardens, or wetlands. They are meant to collect and hold rainwater only during and for no more than 24 or so hours max after a rainfall event. Designing them this way goes a long way to keeping another persistent climate pest at bay: mosquitos.
Rain gardens are typically placed on the downside of a slope — the best location for them to collect excess rainwater runoff — and at least 10 feet from a house or other residence. Building the garden itself is a bit of a process, one with more than a few moving parts (luckily, Penn State Extension offers a fantastic primer on getting started). The good new there is that most work associated with rain gardens happens up front; once the garden is established, it typically requires minimal maintenance.
Just as some plants are drought-tolerant, other vegetation can easily withstand temporary excesses of water — and these are the plants you want to seek out for your rain garden. Be sure to seek out a mix of shrubs, perennials and grasses, and flowers that are native to your region.
Some shrubs that "are tolerant of inundated (flooded) conditions … [and] can tolerate standing water for a period of time" include elderberry, silky dogwood, winterberry, and swamp azalea. American beautyberry, red-osier dogwood, and Virginia sweetspire can handle pretty wet conditions too, but don't love it when standing water hangs around quite as long.
In the perennials, grasses, and ferns department, look to marsh marigold, switchgrass, goldenrod, cinnamon fern, and blue flag iris (among many others) for the wettest areas of the rain garden, and evening primrose, threadleaf coreopsis, blue mistflower, and boltonia for the corners that get a little less swamped.
Here at Climate Reality, we've long had a keen interest in climate-smart agriculture and the ways farmers and gardeners can do their part to help turn the tide on climate by taking action to fight this crisis.
It's important to remember that you don't have to manage a thousand acres to do something real for our climate. From edible landscaping to "lasagna gardening" and so much more, you can be the change you want to see. You don't even have to leave your own backyard to get started!
And when your neighbors, colleagues, or family members ask what you're up to, tell them you are taking action for the planet. Sometimes, the most powerful climate action you can take is simply talking about the crisis and the ways we can fight it and win together.
In the meantime, sign up below to join Climate Reality's email list and we'll keep you posted on the latest developments in climate policy and how you can help solve the climate crisis.
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By Sara Lindberg
Whether you've hit a workout plateau or you're just ready to turn things up a notch, adding more strenuous exercise — also known as high-intensity exercise — to your overall fitness routine is one way to increase your calorie burn, improve your heart health, and boost your metabolism.
However, to do it safely and effectively, there are some guidelines you should follow. Keep reading to learn more about the benefits of vigorous exercise and how to safely dial up the intensity of your workouts.
What Is Considered Strenuous Exercise?<p>When it comes to exercise, the intensity of how hard you work out is just as important as the duration of your exercise session. In general, exercise intensity is divided into three categories:</p><ul><li>low</li><li>moderate</li><li>vigorous or strenuous</li></ul><p>For an activity to be vigorous, you need to work at 70 to 85 percent of your maximum heart rate, according to the<a href="https://www.heart.org/en/healthy-living/fitness/fitness-basics/target-heart-rates" target="_blank"> American Heart Association</a>. Examples of vigorous exercise include:</p><ul><li>running</li><li>cycling at 10 mph or faster</li><li>walking briskly uphill with a heavy backpack</li><li>jumping rope</li></ul><p>Low to moderate exercise is easier to sustain for longer periods since you work below 70 percent of your maximum heart rate and, sometimes, well below that level.</p><p>To reap health benefits, the <a href="https://www.hhs.gov/fitness/be-active/physical-activity-guidelines-for-americans/index.html" target="_blank">Physical Activity Guidelines for Americans</a> recommends that people age 18 and older get one of the following:</p><ul><li><strong>150 minutes</strong> of moderate-intensity aerobic activity per week</li><li><strong>75 minutes</strong> of vigorous aerobic activity per week</li><li><strong>combination of both types</strong> of activity spread throughout the week</li></ul>
Strenuous Exercise Vs. Moderate Exercise<p>Increasing your exercise intensity is fairly simple to do. You can still participate in your favorite activities — just at a more vigorous pace.</p><p>One of the benefits of more strenuous exercise is that you can reap the same rewards as moderate-intensity exercise but in less time. So, if time is of the essence, doing a more strenuous 20-minute workout can be just as beneficial as doing a slower 40-minute workout session.</p><p>Here are some examples of <a href="https://www.cdc.gov/nccdphp/dnpa/physical/pdf/pa_intensity_table_2_1.pdf" target="_blank">strenuous vs. moderate exercise<span></span></a>.</p><table><tbody><tr><th>Moderate intensity</th><th>Strenuous intensity</th></tr><tr><td>bicycling at less than 10 mph</td><td>bicycling at more than 10 mph</td></tr><tr><td>walking briskly</td><td>running, or hiking uphill at a steady pace</td></tr><tr><td>jog-walk intervals</td><td>water jogging/running</td></tr><tr><td>shooting baskets in basketball</td><td>playing a basketball game</td></tr><tr><td>playing doubles tennis</td><td>playing singles tennis</td></tr><tr><td>raking leaves or mowing the lawn</td><td>shoveling more than 10 lbs. per minute, digging ditches</td></tr><tr><td>walking stairs</td><td>running stairs</td></tr></tbody></table>
Benefits of Vigorous Exercise<p>Besides being more efficient, turning up the heat on your fitness sessions can benefit your health in a variety of ways. Let's take a closer look at some of the evidence-based benefits of a higher intensity workout.</p><ul><li><strong>Higher calorie burn.</strong> According to the <a href="https://www.acefitness.org/education-and-resources/professional/expert-articles/5008/7-things-to-know-about-excess-post-exercise-oxygen-consumption-epoc/?utm_source=Rakuten&utm_medium=10&ranMID=42334&ranEAID=TnL5HPStwNw&ranSiteID=TnL5HPStwNw-hYlKnAcfzfixAUsvnO6Ubw" target="_blank">American Council on Exercise</a>, working out at a higher intensity requires more oxygen, which burns more calories. It also contributes to excess post-exercise oxygen consumption (EPOC) or the "afterburn effect" that allows you to continue burning calories even after you finish working out. This means your metabolism will stay elevated for longer after a vigorous exercise session.</li><li><strong>More weight loss.</strong> A <a href="https://www.healthline.com/health-news/interval-workouts-will-help-you-lose-weight-more-quickly" target="_blank">higher calorie burn</a> and an elevated metabolism will help you lose weight more quickly than doing low- or moderate-intensity exercise.</li><li><strong>Improved heart health.</strong> According to a <a href="https://www.ncbi.nlm.nih.gov/pubmed/16377300" target="_blank">2012 study</a>, high- and moderate-intensity exercise appears to offer low chance of cardiovascular events, even in those with heart disease. Cardiovascular benefits may include improvements in:<ul><li><a href="https://www.healthline.com/health/diastole-vs-systole" target="_blank">diastolic blood pressure</a></li><li><a href="https://www.healthline.com/nutrition/15-ways-to-lower-blood-sugar#TOC_TITLE_HDR_1" target="_blank">blood sugar control</a></li><li>aerobic capacity</li></ul></li><li><strong>Improved mood.</strong> High-intensity exercise may also boost your mood. According to a large <a href="https://www.jstage.jst.go.jp/article/jpts/27/4/27_jpts-2014-736/_article" target="_blank">2015 study</a> that analyzed the data of more than 12,000 participants, researchers found a significant link between strenuous exercise and fewer depressive symptoms.</li><li><strong>Lower risk of mortality.</strong> According to a 2015 <a href="https://www.ncbi.nlm.nih.gov/pubmed/25844882" target="_blank">study</a>, researchers found that vigorous activity may be key to avoiding an early death. The study, which followed 204,542 people for more than 6 years, reported a 9 to 13 percent decrease in mortality for those who increased the intensity of their exercise sessions.</li></ul>
How to Measure Exercise Intensity<p>So, how do you know for sure that you're exercising at a strenuous level? Let's look at three ways to measure the intensity of your physical activity.</p><h3>1. Your heart rate</h3><p>Monitoring your heart rate is one of the most reliable methods for measuring exercise intensity. Exercising at 70 to 85 percent of your maximum heart rate qualifies as vigorous exercise intensity.</p><blockquote><strong><strong>WHAT IS YOUR MAXIMUM HEART RATE?</strong></strong>Your maximum heart rate is the fastest your heart can safely beat. To find out what your maximum heart rate is you need to subtract your age from 220. For example, for a 40-year-old person: <ul><li>220 bpm (beats per minute) minus age</li><li>220 – 40 = 180 bpm</li></ul>To work out at a vigorous pace, you'll want to exercise within 70 to 85 percent of your maximum heart rate. For example: <ul><li>180 x 0.70 (70 percent) = 126</li><li>180 x 0.85 (85 percent) = 153</li></ul>For a 40-year-old person, a vigorous training range is 126 to 153 bpm.<br></blockquote><p>You can check your heart rate while you're working out by wearing a heart rate monitor or <a href="https://www.healthline.com/health/how-to-check-heart-rate" target="_blank">taking your pulse</a>.</p>
How to Add Vigorous Activity to Your Workout<p>Adding strenuous activity to your weekly workout routine requires some careful planning. Fortunately, many of the activities that you do at a moderate level can easily be performed at a higher intensity.</p><p>One way of incorporating vigorous aerobic activity into your routine is to do a <a href="https://www.healthline.com/nutrition/benefits-of-hiit" target="_blank">high-intensity interval training (HIIT)</a> workout. This type of workout combines short bursts of intense activity — typically performed at 80 to 95 percent of your maximum heart rate — with recovery periods at 40 to 50 percent maximum heart rate.</p><p>To sustain this level of training, consider following a 2:1 work to rest ratio. For example, a <a href="https://www.healthline.com/health/treadmill-weight-loss#hiit" target="_blank">treadmill workout </a>or outdoor running session could include:</p><ul><li>running at 9 to 10 mph for 30 seconds</li><li>followed by walking at 3 to 4 mph for 60 seconds</li><li>alternating this work-to-rest ratio for 20 to 30 minutes</li></ul><p>Playing a fast-paced sport like soccer, basketball, or racquetball is another effective way to add strenuous activity to your fitness routine. Participating in <a href="https://www.healthline.com/health/benefits-of-a-spin-class" target="_blank">cycling classes</a> or swimming laps are other ways to build more strenuous exercise into your workouts.</p>
Safety Tips<p>Before you turn up the intensity on your workouts, it's important to keep the following safety tips in mind.</p><h3>Check with your doctor</h3><p>If you have a health condition or you haven't been active in a while, make sure you talk to your doctor before you start a high-intensity exercise routine. Your doctor can advise you on a safe level of exercise or how to become more active in the safest way possible.</p><h3>Build up the intensity slowly</h3><p>Going from low- or moderate-intensity workouts to vigorous exercise requires time and patience. While you may be ready to jump in with both feet, the safest way to add more vigorous exercise is to do it in bite-size increments. Pushing yourself too quickly can result in injuries and burnout.</p><p>For example:</p><ul><li><strong>Week 1:</strong> Swap out one moderate-paced cardio session for a HIIT workout.</li><li><strong>Week 2:</strong> Swap one moderate-paced session with a HIIT workout, and also add a circuit strength training session to your weekly routine.</li><li><strong>Week 3 and 4: </strong>Repeat weeks 1 and 2 before you start adding more high-intensity exercise to your weekly routine.</li></ul><p>It's also a good idea to space out your vigorous workouts throughout the week. Try not to do two strenuous sessions back-to-back.</p><h3>Don't forget the recovery time</h3><p>Your body requires more time to recover from a vigorous workout compared to a low- or moderate-intensity session.</p><p>To help your body recover, make sure to always include a cooldown and <a href="https://www.healthline.com/health/exercise-fitness/static-stretching" target="_blank">stretch routine</a> after strenuous physical activity.</p><h3>Stay hydrated</h3><p><a href="https://www.healthline.com/nutrition/7-health-benefits-of-water" target="_blank">Staying hydrated</a> is especially important when you're exercising hard. Not drinking enough fluids can affect the quality of your workout and make you feel tired, lethargic, or dizzy. It may even lead to <a href="https://www.healthline.com/health/dehydration-headache" target="_blank">headaches</a> and <a href="https://www.healthline.com/health/pain-relief/how-to-stop-leg-muscle-cramps" target="_blank">cramps</a>.</p>
The Bottom Line<p>Turning up the intensity of your workout sessions can be an effective way of boosting your overall health and fitness. It's also an easy way to save time when trying to fit a workout into your day.</p><p>To play it safe, always start slow and pay attention to how your body feels.</p><p>While vigorous exercise offers many health benefits, it's not appropriate for everyone. If you have a health condition or you haven't been active in a while, make sure to talk with your doctor before working out at a more strenuous level.</p>
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By Jeffrey Miller
In January 2015, food sales at restaurants overtook those at grocery stores for the first time. Most thought this marked a permanent shift in the American meal.
Solving the Age-Old Problem of Spoiled Cheese<p>People have eaten pasta and cheese together for hundreds of years. Clifford Wright, the doyen of Mediterranean food history, says <a href="http://www.cliffordawright.com/caw/food/entries/display.php/topic_id/16/id/105/" target="_blank">the first written recipe</a> for macaroni and cheese was created in the court of the king of Naples in the 13th century, while <a href="https://food52.com/blog/9916-the-history-of-macaroni-and-cheese" target="_blank">the first reference</a> in an English language cookbook likely appeared in Elizabeth Raffald's 1769 book "The Experienced English Housekeeper."</p><p><span></span>An internet search for macaroni and cheese recipes will turn up over 5 million hits, but many still prefer to get theirs in a box – the kind with pasta that comes in shapes ranging from shells to Pokemon characters, accompanied by a packet of powdered cheese sauce.</p><p>Boxed macaroni and cheese was one outcome of the quest for ways to keep cheese longer. Some cheese gets better as it ages – a well-aged cheddar is one of life's delights – but once most cheeses hit their prime, <a href="https://www.dairyfoods.com/articles/91548-how-to-maximize-cheese-shelf-life" target="_blank">they tend to quickly go bad</a>. Before household refrigeration became common, many retailers wouldn't even stock cheese in the summer because it spoiled so quickly.</p><p>Processed cheese solved this age-old problem.</p>
When Natural Was Nasty<p>Today, food that's simple, pure and natural is <a href="https://theconversation.com/how-was-french-cuisine-toppled-as-the-king-of-fine-dining-66667" target="_blank">all the craze</a>, while <a href="https://apnews.com/c06a1200807c4b82a03452d08d480692" target="_blank">disdain for processed foods</a> is practically a credo among sophisticated consumers.</p><p>But when Kraft's different forms of processed cheese came out, they found widespread acceptance despite their strange textures. The fact that it wasn't natural didn't seem to bother consumers at all. In fact, as international food historian Rachel Laudan <a href="https://online.ucpress.edu/gastronomica/article/1/1/36/93394/A-Plea-for-Culinary-Modernism-Why-We-Should-Love" target="_blank">has noted</a>, back then, "natural was something quite nasty." She describes fresh milk as warm and "unmistakably a bodily secretion." Throughout the history of cookery, most recipes aimed to transform an unappetizing raw product into something delightful and delectable.</p><p>So for most consumers, processed foods were a godsend. They kept well, tended to be easily digestible and, most importantly, they tasted good. Many of them could be easily prepared, freeing women from spending entire days cooking and giving them more time to pursue professions and avocations.</p><p>In some ways, processed foods were also healthier. They could be fortified with vitamins and minerals, and, in an era before everyone had access to mechanical refrigeration, the fact that they kept well meant consumers were less likely to contract diseases from spoiled, rotten foods. Pasteurization of dairy products virtually <a href="https://www.the-scientist.com/foundations/rethinking-raw-milk--1918-65126" target="_blank">eliminated diseases like undulant fever</a>, while foods processed and canned in large factories were less likely to harbor food-borne illnesses that could crop up due to faulty or improperly sanitized equipment used by home canners.</p>
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By Mark Kaufman
Some fires won't die.
They survive underground during the winter and then reemerge the following spring, as documented in places like Alaska. They're called "overwintering," "holdover," or "zombie" fires, and they may have now awoken in the Arctic Circle — a fast-warming region that experienced unprecedented fires in 2019. The European Union's Copernicus Atmosphere Monitoring Service is now watching these fires, via satellite.