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By Charli Shield
Not too long ago, many people weren't sure if trees had a place in cities. People, cars, houses and buildings made up urban areas — there wasn't much room for nature.
Trees now have a fundamental place in many big cities around the world, says Sonja Dümpelmann, landscape historian at the University of Pennsylvania — though in most of them, they are still vying for space.
If we want to reap the benefits of urban treescapes, ecologists say it's vital trees are seen as more than just an aesthetic addition to cities. That's especially true now that half the world's population live in cities and a further 2.5 billion are projected to live in them by 2050.
As Cities Evolve, Trees Keep Us Grounded.
Trees are powerhouses when it comes to regulating city microclimates — filtering air pollution, providing shade, absorbing CO2, helping prevent flash flooding, as well as acting as an important antidote to the urban heat island effect that makes cities far hotter than surrounding rural areas.
"Trees can make a huge difference to a city's temperature," says Tobi Morakinyo, an urban climatologist whose research into the cooling effect of trees in Akure, southwest Nigeria, showed using trees to shade buildings could cool them down by up to five degrees Celsius.
In hot sub Saharan African cities like Akure — where average maximum summer temperatures can reach 38 degrees (100 degrees F) — Morakinyo says trees' cooling effect is an important tool councils can wield against both heat stress and cooling costs.
Alongside the eco-services urban trees provide, there are also the qualities "that we can't put monetary value on," adds Cris Brack, a forest ecologist from the Australian National University and director of the National Arboretum in Canberra.
Those are "biodiversity, aesthetics and our visceral, gut-need to experience nature," Brack told DW, referring to the concept of 'biophilia' — the idea that humans have an innate desire to connect with nature. Mounting evidence shows that people who live in places with more trees experience lower levels of stress and mental illness, even when controlling for socio-economic factors.
Trees Make Us Feel Good — Do We Return the Favor?
Though our need for trees in cities appears to only be becoming greater, they often battle oppressive urban environments. Street trees are "in a constant struggle" for space in cities, says Brack, where below ground their root systems can be choked by water pipes, roads and underground car parks, and above ground by pollution, power lines and traffic.
They also face mechanical damage from cars, battering from increasingly extreme weather conditions and regular uprootings to make way for construction sites.
Perhaps the most damaging modern challenge for city trees, though, says Somidh Saha, urban forest ecologist at the Karlsruhe Institute of Technology in Germany, is drought. Following Europe's unprecedented heatwave in 2018, a study co-authored by Saha found 30% of the trees planted in Karlsruhe in southwestern Germany over the previous four years had died — both directly and indirectly because of a lack of water.
"Without enough water, trees become weak and that makes them vulnerable to disease," Saha told DW. At the same time, declining city populations of birds and arboreal mammals, such as bats, leaves insect populations unchecked, and local trees susceptible to their growing numbers.
Seeing the Forest for the Trees
Ambitious greening projects have cropped up in several megacities around the globe in recent years. New York City planted a million trees between 2007 and 2015, London mayor Sadiq Khan hopes to green more than half the capital by 2050 to make the world's first "National Park City," while Paris announced it would build four inner-city urban forests throughout 2020.
But outside the Global North, in places such as Saha's native India and Morakinyo's native Nigeria, where they cite a lack of resources and political will as big barriers to making urban greenery a priority, trees in cities are much scarcer.
As climate change brings hotter temperatures and unpredictable downpours, cities are demanding a new kind of resilience from urban trees. For many cities in the world, ecologists say that means planting more exotic species of trees.
While many people are opposed to the idea of planting non-native species, ecologists Brack and Saha say alternative species are usually better adapted to the artificial environment of a city — especially in the face of increasing heatwaves.
The three-toothed Maple, native to China, Korea and Japan, is one species that could appear in greater numbers in other parts of the world as temperatures rise.
There's also an important distinction to be made between "exotic" trees, which just means they aren't local, and "invasive" trees, which are harmful — spreading very quickly and dominating the environment. As for local wildlife, while ongoing studies are being carried out in places like Germany by Saha's team, Brack says in his local Canberra, where almost all tree species in the city are exotic, birds happily eat fruit from non-natives and mammals alike find homes wherever there is an appropriate hollow.
Citizens Pitch In
One solution to preserving city trees that's grown in popularity in recent years is citizen involvement in urban tree caretaking. New York City's citizen pruner program allows city dwellers to take classes to become official city tree carers, and Berlin — a place that has typically excluded citizens from looking after urban flora — is now allowing residents to apply for permits to maintain tree pits and has proposed that they water city trees in summer.
Involving citizens has its pros and cons, Dümpelmann says, and these kinds of programs may or may not be effective depending on the culture of the city – but even watering trees alone "has been shown to be a really relevant maintenance effort."
While planting trees in urban spaces is an effective and fairly efficient way to adapt to climate change, Dümpelmann stresses that it isn't a holistic solution.
"It's something we should work on while at the same time addressing the root causes of climate change," she said.
Beyond using trees as geo-engineering fix, urban ecologists point out that more trees in cities could change perspectives on urban living and give people a greater understanding of how to value nature as part of a sustainable, livable city – not separate from it.
That means seeing trees as living, growing beings, Brack says – not fixed in time, or immune to the stressors of living in harsh urban environments.
Reposted with permission from Deutsche Welle.
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EcoWatch Daily Newsletter
After decades on the political periphery, the climate movement is entering the mainstream in 2020, with young leaders at the fore. The Sunrise Movement now includes more than 400 local groups educating and advocating for political action on climate change. Countless students around the world have clearly communicated what's at stake for their futures, notably Swedish activist Greta Thunberg, who just finished her yearlong school strike for climate. Youth activists have been praised for their flexible, big-picture thinking and ability to harness social media to deliver political wins, as Sunrise recently did for U.S. Sen. Ed Markey's primary campaign. They necessarily challenge the status quo.
A Convergence of Issues<p>The unequal impacts of a changing climate have become extremely clear in 2020, so equity has come to the fore of climate conversations in every corner of the country. A global deadly pandemic continues to rage out of control in the U.S., heat waves are setting new temperature records, wildfires are scorching American Western states, and the hurricane season has already made it to the end of the alphabet for naming storms. In all cases, low-income, Black, Latinx, and Indigenous communities are bearing a disproportionate amount of the impacts.</p><p>"Today, the scab is off, the ugly reality of injustice is hitting us up close and personal, made more realistic by this COVID pandemic," Bullard says.</p><p>This year the decidedly youthful focus on intersectionality is a big part of what defines the transformation of the climate movement. Climate is not just an environmental issue, according to youth activists. It's also a racial justice issue, an economic issue, and an access-to-health care issue.</p><p>"Environmental justice is really seeing the intersection of these issues," says Alex Rodriguez, a community organizer with the Connecticut League of Conservation Voters, which aims to make environmental issues a priority for the state's elected leaders. The group is now focusing their efforts on the coming election and recently succeeded in persuading the state to allow absentee voting in November. "We want people to be safe when casting their vote," says Rodriguez, 26, whose fellow grassroots committee members range from age 16 to 60.</p><p>Rodriguez, who also serves on the equity and environmental justice working group for the Governor's Council on Climate Change, says, "We see our programmatic work as a way to help lawmakers see what they can do to improve the dignity of those suffering from environmental racism, systematic racism, and economic oppression."</p><p>Seeing the overlap and bringing these issues together is a strength that Bullard says was missing from the civil rights organizing he was involved with in the 1960s. He says 2020 is unique in many ways.</p><p>"The number of marchers is unprecedented, from different economic, ethnic, and racial groups—an awakening unlike any that I've seen on this Earth in over 70 years," Bullard says. "Today, the different movements are converging, and I think that convergence makes for greater potential for success."</p>
Young and Old<p>But young people are one essential demographic among many when it comes to climate action. With all that's on the line for climate in the coming elections, up and down the ballot, collaboration becomes key. Bullard says previous generations of climate activists can now play the critical role of mentoring, assisting, and supporting. Standing with, not in front of, youth.</p><p>"Youth are leading us and taking on frontline activity," says Jayce Chiblow, the community engagement lead for Indigenous Climate Action, a Canadian organization that works for Indigenous-led climate justice solutions. But in doing so, she says many young Indigenous activists are experiencing the trauma of violence, getting arrested, and being taken away from their land. "All of our older people are supporting those youth: Elders, mentors, people trained in nonviolent action," Chiblow says. "The youth aren't alone."</p><p>That support can go a long way. "There's a lot of anger and a lot of fear, and that's understandable," says Wazer of Sunrise Connecticut. "I definitely feel those things, too, just considering the ways that our future has been threatened and kind of trashed by older generations."</p><p>Under the Trump administration, the number of environmental rollbacks alone can be disheartening, not to mention new <a href="https://www.yesmagazine.org/video/arctic-national-wildlife-refuge/" target="_blank">drilling permits in the Alaska National Wildlife Refuge going up for auction</a>.</p><p>Wazer is frank about the risks of burnout, depression, and anxiety from the stress of it all, but draws inspiration from the example of the late U.S. representative and lifelong civil rights activist John Lewis. "That forgiveness and that ability to keep fighting and stay motivated … I think that that is something really powerful to learn from older generations."</p><p>An intergenerational approach can leverage the individual strengths of youth and older people in all their diversity.</p><p>"The elders hold our stories," says Chiblow, who is Anishinaabe from Garden River First Nation, Ontario. Those stories include lived experiences, culture, history, and generations of adapting to changes in climate. Such collective experience continues to inform Indigenous knowledge and connections to the land, as well as how people manage and govern themselves in relation to it. This knowledge is passed on through relationship-building and storytelling.</p><p>"Every time you hear that story, you're at a different point in your life, and you'll pick up something else … something new," Chiblow says.</p><p>Changes in perspectives that come with time and experience are among the reasons why intergenerational learning and coalitions are critical to the climate movement. To combine that living and learning is to expand the reach and meaning of the message exponentially. As part of her research for her master's degree, Chiblow brought together youth, community leaders, and knowledge keepers in her community to workshop climate action. "Those relationships are vital to keep that movement going," Chiblow says.</p>
The Unique Value Proposition of Elders<p>Older activists bring unique strengths to the table, according to gerontologist Mick Smyer, who designs strategies to move people from anxiety to action on climate. He calls himself "the aging whisperer to climate groups" and "the climate whisperer to aging groups." He is quick to point out that the learning can go in both directions.</p><p>"I think older adults are untapped resources," Smyer says. "Older adults bring several resources, one of which is their circles of influence. Just by virtue of having lived longer, older adults are going to have denser and richer networks," Smyer says. "The second is, when it comes to voting and civic engagement, older adults, as an age group, outperform all other age groups."</p><p>He uses the 2016 presidential election to illustrate his point: "The older age groups, 70% of them voted. Nobody [else] came close." He is cautious about making sweeping statements about older people broadly, but he says that ageism is alive and well. And that can deter the kind of collaboration that would beget necessary progress on climate action.</p><p>As the twin global patterns of an aging population and a changing climate continue arm in arm, Smyer says a good place for starting this work is within one's family.</p><p>"We each have that power to use in our circles of influence, particularly in our families, and we don't realize it," Smyer says. Whether it's via Zoom or FaceTime or a phone call or a chat in the living room, Smyer says, family members have a superpower: They will listen to each other, and they'll at least start the conversation.</p><p> "Intergenerational collaboration around climate issues, particularly in this election season, starts at home, and then goes to the polling booth," he says.</p>
Speaking the Same Language<p>As an individual's network of family, friends, and connections becomes wider and more diverse, the more work will need to be done to have them all working toward the same goals. That is equally true for the climate movement at large.</p><p>In bridging the gaps among baby boomers, Gen Xers, and millennials, Bullard says, "Each generation will have some idiosyncrasy and uniqueness about it that another generation will not understand or comprehend."</p><p>If everybody in a group or institution is similar, then there's no need to explain a lot, Bullard says. There's usually a fair amount of shared knowledge and values. But the more diverse that group gets, in age, race, gender, or culture, he says, the greater the potential for making mistakes, stepping on people's culture, and causing pain. But the potential for learning also increases exponentially.</p><p>Chiblow says successful collaboration comes down to being able to speak in shared concepts. The term "justice," for example, is an English word that's hard to translate into the Anishinaabe language. Chiblow says that because her community sees itself as belonging to the land, and being part of the land, the Anishinaabe worldview, and therefore their understanding of justice, is necessarily more holistic than the mainstream.</p><p>"Indigenous people have been feeling [the effects of climate change] for so long," Chiblow says. Today, as wildfires rage across the West, the mantra of "I can't breathe" is being driven home on a grand scale. For better and worse, climate justice is finally a front-page story.</p><p>"It's affecting the broader society," Chiblow says. "We're finally at the turning point where we could start to make real change because … people are really starting to feel that urgency."</p><p>The urgency will be tantamount in the coming election. A lot is at stake, says Chiblow: "Incentives, funding, all-around agreement, and also the way we're able to manage our lands and ourselves as people."</p><p>Bullard, too, is insistent on urgency. "This election is one of the most important elections of a generation, because there's so many things at stake," he says. "We can't wait another 40 years on climate. We don't have that much time. We don't have 40 years to get justice."</p><p>Issues of climate justice will be on the ballot in state and local elections this fall, such as Nevada's proposed renewable energy standards and Louisiana's proposed disaster funding. And the topic has finally made it onto the national stage. Joe Biden called Trump a "climate arsonist" for not acting on or even admitting that the wildfires in California are clearly climate-related. The frequency and intensity of such disasters is indisputable.</p><p>"Hurricanes don't swerve to avoid red states or blue states. Wildfires don't skip towns that voted a certain way," Biden <a href="https://abcnews.go.com/Politics/biden-address-west-coast-fires-confront-growing-threat/story?id=73000218" target="_blank">said in a speech on Sept. 14</a>. "The impacts of climate change don't pick and choose. That's because it's not a partisan phenomenon."</p><p>In many ways, the results of the upcoming elections will reflect the ways youth activists and older activists are able come to a common understanding of what climate justice means and what they want the future world to look like. </p><p>"There's a lot of knowledge built up in experience, and there's a lot of energy that's stored in young people," Bullard says. "When you put those two together, you have … an excellent recipe for potential success."</p>
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By Simon Montlake
For more than a decade, Susan Jane Brown has been battling to stop a natural gas pipeline and export terminal from being built in the backcountry of Oregon. As an attorney at the nonprofit Western Environmental Law Center, she has repeatedly argued that the project's environmental, social, and health costs are too high.
All that was before this month's deadly wildfires in Oregon shrouded the skies above her home office in Portland. "It puts a fine point on it. These fossil fuel projects are contributing to global climate change," she says.
Moderates Feeling the Heat<p>If elected, Mr. Biden has vowed to stop new drilling for oil and gas on federal land and in federal waters and to rejoin the 2015 Paris climate accord that President Donald Trump gave notice of quitting. He would reinstate Obama-era regulations of greenhouse gas emissions, including methane, the largest component of natural gas.</p><p>The Biden climate platform also states that all federal infrastructure investments and federal permits would need to be assessed for their climate impacts. Analysts say such a test could impede future LNG plants and pipelines, though not those that already have federal approval. </p><p>Climate change activists who pushed for that language say much depends on who would have oversight of federal agencies that regulate the industry. Some are wary of Biden's reliance on advice from Obama-era officials, including former Energy Secretary Ernest Moniz, who is now on the board of Southern Company, a utility, and a former Obama environmental aide, Heather Zichal, who has served on the board of Cheniere Energy, an LNG exporter. </p>
The Push for U.S. Fuel Exports<p>As vice president, Biden was part of an administration that pushed hard for global climate action while also promoting U.S. oil and gas exports to its allies and trading partners. As fracking boomed, Obama ended a 40-year ban on crude oil exports. In Europe, LNG was touted both as an alternative to coal and as strategic competition with Russian pipelines.</p><p>That much, at least, continued with President Trump. Under Energy Secretary Rick Perry, the agency referred to liquified U.S. hydrocarbons as "<a href="https://www.nytimes.com/2019/05/29/us/freedom-gas-energy-department.html" target="_blank">freedom gas</a>."</p><p>Mr. Trump has also championed the interests of coal, oil, and gas while denigrating the findings of government climate scientists. He rejected the Paris accord as unfair to the U.S. and detrimental to its economy, but has offered no alternative path to emissions cuts. </p><p>Still, Trump's foreign policy has not always served the LNG industry: Tariffs on foreign steel drove up pipeline costs, and a trade war with China stayed the hand of Chinese LNG importers wary of reliance on U.S. suppliers. </p><p>Even his regulatory rollbacks could be a double-edged sword. By relaxing curbs last month on methane leaks, the U.S. has ceded ground to European regulators who are drafting emissions standards that LNG producers are watching closely. "That's a precursor of fights that will be fought in all the rest of the developed world," says Mr. Hutchison. </p><p>Indeed, some oil-and-gas exporters had urged the Trump administration not to abandon the tougher rules, since they undercut their claim to offer a cleaner-burning way of producing heat and electricity. "U.S. LNG is not going to be able to compete in a world that's focused on methane emissions and intensity," says Erin Blanton, a senior research scholar at the Center on Global Energy Policy at Columbia University. </p>
Stepping on the Gas<p>In July, the Department of Energy issued an export license to Jordan Cove's developer, Canada's Pembina Pipeline Corp. In a statement, Energy Secretary Dan Brouillette said the project would provide "reliable, affordable, and cleaner-burning natural gas to our allies around the world."</p><p>As a West Coast terminal, Jordan Cove offers a faster route to Asia where its capacity of 7.8 million tons of LNG a year could serve to heat more than 15 million homes. At its peak, its construction would also create 6,000 jobs, the company says, in a stagnant corner of Oregon.</p><p>But the project still lacks multiple local and state permits, and its biggest asset – a Pacific port – has become its biggest handicap, says Ms. Blanton. "They are putting infrastructure in a state where there's no political support for the pipeline or the terminal, unlike in Louisiana or Texas," she says. </p><p>Ms. Brown, the environmental lawyer, says she wants to see Jordan Cove buried, not just mothballed until natural gas prices recover. But she knows that it's only one among many LNG projects and that others will likely get built, even if Biden is elected in November, despite growing evidence of the harm caused by methane emissions. </p>
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The connection between the pandemic and our dietary habits is undeniable. The stress of isolation coupled with a struggling economy has caused many of us to seek comfort with our old friends: Big Mac, Tom Collins, Ben and Jerry. But overindulging in this kind of food and drink might not just be affecting your waistline, but could potentially put you at greater risk of illness by hindering your immune system.
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As the world continues to navigate the line between reopening and maintaining safety protocols to slow the spread of the coronavirus, rapid and accurate diagnostic screening remains critical to control the outbreak. New mobile-phone-based, self-administered COVID-19 tests being developed independently around the world could be a key breakthrough in making testing more widely available, especially in developing nations.
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