World Vegetable Harvests Threatened by Environmental Changes
Climate change is boxing us into a dietary corner. Research last month suggested that avoiding meat and dairy was the best thing an individual could do to reduce their ecological footprint, but now scientists predict that rising global temperatures and other changes could make vegetable and legume alternatives harder to come by.
The new study, published Monday in the Proceedings of the National Academy of Sciences, was the first to consider the impacts of climate change on the harvest of non-staple vegetables and legumes. It found that if no action is taken, environmental changes predicted for the second half of the 21st century could reduce vegetable and legume yields by around one-third.
"Vegetables and legumes are vital components of a healthy, balanced and sustainable diet and nutritional guidelines consistently advise people to incorporate more vegetables and legumes into their diet. Our new analysis suggests, however, that this advice conflicts with the potential impacts of environmental changes that will decrease the availability of these important crops unless action is taken," study lead author Dr. Pauline Scheelbeek of the London School of Hygiene & Tropical Medicine (LSHTM) said in a LSHTM press release.
While the potential impact of climate change on staple crops has been studied in depth, all that was known about its impact on non-staple vegetables was that increased levels of carbon dioxide in the atmosphere might increase yields.
To get a more complete picture, researchers examined every experimental study published since 1975 on the impact of various environmental changes on vegetable and legume yield and nutritional content in 40 countries.
Based on the data, the researchers estimated how changes predicted for the mid-to-late 21st century, such as increased carbon dioxide levels, increased ozone levels, decreased water availability, increased water salinity and increased temperatures, would impact yields and nutrition.
Impacts on nutrition were mixed, but researchers found worrying changes in the potential yields of these healthy foods. While they found that an increase in carbon dioxide of 250 parts per million would increase vegetable and legume yields by an average of 22 percent, this was counteracted by the impact of other changes. A 25 percent increase in ozone would decrease yields by 8.9 percent, a 50 percent increase in water scarcity would decrease yields by 34.7 percent, a 25 percent increase in salinity would decrease yields by 2.3 percent and a four degree Celsius increase in temperature in warmer regions like Southern Europe, Africa and South Asia would decrease yields there by 31.5 percent.
Senior study author and LSHTM Professor Alan Dangour said the results were a call to action for governments, agricultural workers and public health officials.
"Our analysis suggests that if we take a 'business as usual' approach, environmental changes will substantially reduce the global availability of these important foods. Urgent action needs to be taken, including working to support the agriculture sector to increase its resilience to environmental changes and this must be a priority for governments across the world," Dangour said in the release.
"But our study also identifies the broader policy relevance of environmental change. Vegetables and legumes are essential constituents of healthy diets and so efforts to ensure that their global availability is not threatened by predicted environmental changes must also be high on the global public health agenda," he said.
This week marks the official start of fall, but longer nights and colder days can make it harder to spend time outdoors. Luckily, there are several inspiring environmental films that can be streamed at home.
1. Kiss the Ground<span style="display:block;position:relative;padding-top:56.25%;" class="rm-shortcode" data-rm-shortcode-id="ccc5f0c92a5603e68aec39e56b0db02a"><iframe lazy-loadable="true" src="https://www.youtube.com/embed/K3-V1j-zMZw?rel=0" width="100%" height="auto" frameborder="0" scrolling="no" style="position:absolute;top:0;left:0;width:100%;height:100%;"></iframe></span><p><strong>Streaming On: Netflix</strong></p><p><strong>Premiere Date: Sept. 22</strong></p><p>Between <a href="https://www.ecowatch.com/wildfires-california-washington-oregon-photos-2647585008.html" target="_self">wildfires devastating the U.S. West Coast</a> and <a href="https://www.ecowatch.com/tropical-storm-beta-landfall-2647760268.html" target="_self">storms battering the Gulf</a>, the impacts of the <a href="https://www.ecowatch.com/climate-change/" target="_self">climate crisis</a> can feel overwhelming right now. <em><a href="https://kissthegroundmovie.com/" rel="noopener noreferrer" target="_blank">Kiss the Ground</a> </em>offers an alternative to all of the bad news by focusing on solutions.</p><p>The film, directed by Josh and Rebecca Tickell and narrated by Woody Harrelson, explains how we can heal the Earth through "regenerative agriculture," farming practices that draw carbon dioxide from the atmosphere and into soil as a way to restore soil health, which in turn boosts ecosystems and food supplies.</p><p>"<em>Kiss the Ground </em>shows how feasible it is to make these changes at a grassroots level immediately and make a truly substantive impact with low cost and easy to implement solutions," Executive Producer RJ Jain said in an email. "This is why I got involved."</p>
2. Public Trust: The Fight for America's Public Lands<span style="display:block;position:relative;padding-top:56.25%;" class="rm-shortcode" data-rm-shortcode-id="5338f7a2931e356910026e5fd76fac56"><iframe lazy-loadable="true" src="https://www.youtube.com/embed/jsKMTAaj_wQ?rel=0" width="100%" height="auto" frameborder="0" scrolling="no" style="position:absolute;top:0;left:0;width:100%;height:100%;"></iframe></span><p><strong>Streaming On: YouTube</strong></p><p><strong>Premiere Date: Sept. 25, 2 p.m. EDT </strong></p><p>This <a href="https://www.patagonia.com/films/public-trust/" target="_blank">award-winning documentary</a> tells the stories of Indigenous activists, journalists, whistleblowers and historians working to protect America's <a href="https://www.ecowatch.com/tag/public-lands" target="_self">public lands</a>. The film focuses on three political struggles: the shrinking of <a href="https://www.ecowatch.com/tag/bears-ears" target="_self">Bears Ears</a> National Monument in Utah, the mining of Boundary Waters Wilderness in Minnesota and the opening of the <a href="https://www.ecowatch.com/tag/Arctic-National-Wildlife-Refuge" target="_self">Arctic National Wildlife Refuge</a> to fossil fuel exploration.</p><p><em>Public Trust</em> was directed by David Garrett Byars and produced by Jeremy Rubingh. Patagonia Films, Patagonia founder Yvon Chouinard and actor Robert Redford are executive producers. It will be <a href="https://www.youtube.com/watch?v=OGjnIG7puzY" rel="noopener noreferrer" target="_blank">released</a> on YouTube in time for <a href="https://www.ecowatch.com/national-public-lands-day-2640656776.html" target="_self">National Public Lands Day</a>.</p><p>"Our country is fortunate to have millions of acres of public lands, including National Parks, Monuments, Wildlife Refuges and Wilderness set aside for future generations," Redford said. "Sadly, these lands that belong to you and me are under unprecedented threats from the greed of big corporations, eager to weaken restrictions in the pursuit of profits. Many of our current politicians are also to blame. <em>Public Trust</em> tells the story of citizens who are fighting back. It's a much-needed wake-up call for all of us who want to preserve our unique and wild cultural heritage."</p>
3. David Attenborough: A Life on Our Planet<span style="display:block;position:relative;padding-top:56.25%;" class="rm-shortcode" data-rm-shortcode-id="156438a30836a765d7a92982545fc334"><iframe lazy-loadable="true" src="https://www.youtube.com/embed/B_OFZvAd05Y?rel=0" width="100%" height="auto" frameborder="0" scrolling="no" style="position:absolute;top:0;left:0;width:100%;height:100%;"></iframe></span><p><strong>Streaming On: Netflix</strong></p><p><strong>Premiere Date: Oct. 4</strong></p><p>Beloved nature broadcaster <a href="https://www.ecowatch.com/tag/David-Attenborough" target="_self">David Attenborough</a> has spent his career introducing viewers to the wonders of our planet. In recent years, his footage of albatrosses swallowing <a href="https://www.ecowatch.com/tag/plastics" target="_self">plastic</a> in <em>Blue Planet II</em> has been credited with <a href="https://www.ecowatch.com/2018-fighting-plastic-waste-2624606566.html" target="_self">helping to ramp up</a> the global fight against plastic pollution. Now, in this <a href="https://www.wwf.org.uk/" rel="noopener noreferrer" target="_blank">World Wildlife Fund</a> (WWF)-produced <a href="https://www.attenborough.film/" rel="noopener noreferrer" target="_blank">documentary</a>, he reflects on the defining moments of his career and the devastating changes he has witnessed.</p><p><em>David Attenborough: A Life on Our Planet,</em> which was also produced by Silverback Films and directed by Alastair Fothergill, Jonnie Hughes and Keith Scholey, features an intimate conversation between Attenborough and Sir Michael Palin as the broadcaster reflects on his life and a career that took him to every continent on Earth. In addition to streaming on Netflix, the movie will be available in select theaters starting Sept. 28.</p><p>"For decades, David has brought the natural world to the homes of audiences worldwide, but there has never been a more significant moment for him to share his own story and reflections," WWF executive producer Colin Butfield said in a <a href="https://www.wwf.org.uk/updates/david-attenborough-life-our-planet" target="_blank">statement</a>. "This film coincides with a monumental year for environmental action as world leaders make critical decisions on nature and climate. It sends a powerful message from the most inspiring and celebrated naturalist of our time."</p>
- Sir David Attenborough Set to Present BBC Documentary on ... ›
- 7 of the Best New Documentaries About Global Warming - EcoWatch ›
- Movies to Watch This Earth Day: EcoWatch Staff Picks - EcoWatch ›
EcoWatch Daily Newsletter
The world's largest online retailer is making it slightly easier for customer to make eco-conscious choices.
- Employees Are Fighting for Climate Change at Work - EcoWatch ›
- Amazon's Carbon Footprint Rises 15% as Company Invests $2 ... ›
- Jeff Bezos Pledges $10 Billion to Fight the Climate Crisis - EcoWatch ›
- Budweiser Re-Labels As Climate-Friendly Beer - EcoWatch ›
The Trump administration's Environmental Protection Agency (EPA) released a risk assessment for toxic pesticide chlorpyrifos Tuesday that downplayed its effects on children's brains and may be the first indication of how the administration's "secret science" policy could impact public health.
- Democratic Bill Banning Toxic Pesticides Applauded as 'Much ... ›
- Trump EPA Won't Regulate Toxic Drinking Water Chemical That ... ›
- California, Nation's Top User of Chlorpyrifos, Announces Ban on ... ›
- Wheeler's EPA Keeps Brain-Damaging Chlorpyrifos in Food ›
- Entire Pesticide Class Must Be Banned to Save Children's Health ... ›
By Maria Trimarchi and Sarah Gleim
If all the glaciers and ice caps on the planet melted, global sea level would rise by about 230 feet. That amount of water would flood nearly every coastal city around the world [source: U.S. Geological Survey]. Rising temperatures, melting arctic ice, drought, desertification and other catastrophic effects of climate change are not examples of future troubles — they are reality today. Climate change isn't just about the environment; its effects touch every part of our lives, from the stability of our governments and economies to our health and where we live.
<p>Why environmental refugees flee their homes is a complicated mixture of environmental degradation and desperate socioeconomic conditions. People leave their homes when their livelihoods and safety are jeopardized. What effects of climate change put them in jeopardy? Climate change triggers, among other problems, desertification and drought, <a href="https://science.howstuffworks.com/environmental/green-science/deforestation.htm" target="_blank">deforestation</a>, land degradation, rising sea levels, <a href="https://science.howstuffworks.com/nature/natural-disasters/flood.htm" target="_blank">floods</a>, more frequent and more extreme storms, <a href="https://science.howstuffworks.com/nature/natural-disasters/earthquake.htm" target="_blank">earthquakes</a>, <a href="https://science.howstuffworks.com/nature/natural-disasters/volcano.htm" target="_blank">volcanoes</a>, food insecurity and famine.</p><p>The September <a href="http://visionofhumanity.org/app/uploads/2020/09/ETR_2020_web-1.pdf" target="_blank">2020 Ecological Threat Register Report</a>, by the Institute for Economics & Peace, predicts the hardest hit populations will be:</p><ul><li>Sub-Saharan Africa, South Asia, the Middle East and North Africa</li><li>Afghanistan, Syria, Iraq, Chad, India and Pakistan (which are among the world's least peaceful countries)</li><li>Pakistan, Ethiopia and Iran are most at risk for mass displacements</li><li>Haiti faces the highest risk of all countries in Central America and the Caribbean</li><li>India and China will be among countries experiencing high or extreme water stress</li></ul>
- Think Today's Refugee Crisis is Bad? Climate Change Will Make it a ... ›
- Climate Change Forces 20 Million People to Flee Each Year, Oxfam ... ›
- Meet the World's First Climate Refugees - EcoWatch ›
In his latest documentary, My Octopus Teacher, free diver and filmmaker Craig Foster tells a unique story about his friendship and bond with an octopus in a kelp forest in Cape Town, South Africa. It's been labeled "the love story that we need right now" by The Cut.
- You're Not So Different From an Octopus: Rethinking Our ... ›
- 'Eating Animals' Drives Home Where Our Food Really Comes From ... ›