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Explained

The iron ocean

Through dust, not rust, the metal plays a complex, controversial role in Earth’s climate

How much meat can we eat — sustainably?

Scientists find that a small amount of animal products could have a place in our diets without wreaking environmental havoc. But it’s far less than what we consume today, and only if farmed in just the right way.

The creative way to pay for wildlife recovery

OPINION: ‘Pragmatic rewilding’ restores damaged ecosystems and harnesses private money, with benefits for all

Rethinking cities in the face of extreme heat

VIDEO: Cities have recently experienced extreme heat waves, causing preventable illness and death. How can we protect people from dangerous heat while also reducing carbon emissions?

How humans shift fish evolution | Things to Know

VIDEO: By targeting larger individuals, intense fishing may lead to a fishery dominated by the small

The obscure calculation transforming climate policy

After long debate, economists and philosophers are reaching consensus on how to value future generations

Beyond COP27: Who will pay for climate solutions?

VIDEO: Economic issues were front and center at the most recent global climate summit. Join Tobias Adrian of the International Monetary Fund and Shuang Liu of the World Resources Institute to take stock of the investments needed to prevent future climate disasters.

Pricing groundwater will help solve California’s water problems

OPINION: The state’s Sustainable Groundwater Management Act is a great opportunity — if it goes far enough

The human hand in fish evolution

Fishery practices that go for the big ones may be counterproductive when mostly the small survive

A shocking number of birds are in trouble

Rich data on the global state of our feathered friends presents plenty of bad news — but also some bright spots. Researchers know better than ever how to help endangered birds, and there are notable bird conservation successes.

Champagne bubbles: the science

As you uncork that bottle and raise your glass, take time to toast physics and chemistry along with the New Year

Eyes on the deep

Decades of exploring the seafloor have helped oceanographer Samantha Joye tackle marine issues — from the underwater movement of oil from Deepwater Horizon to the biology of remote microbial communities

Betting on bats for genetic treasures

Bat genomes are full of clever tricks that are treats for biology and medical science — it’s why scientists want to sequence them all

Why solar geoengineering should be part of the climate crisis solution

The controversial technology of reflecting sunlight away from the planet could help blunt the worst impacts of climate change

Unpersuasive: Why arguing about climate change often doesn’t work

COMIC: In the US, where political parties have increasingly staked claims on one side of the issue or the other, beliefs may be more about belonging than facts

Marine wildlife is starting to suffocate

Global warming and agricultural runoff have driven the loss of oxygen in oceans around the world, with looming ecological consequences.

Rethinking insurance for floods, wildfires and other catastrophes

The industry is in crisis just when disaster coverage is most needed

How to handle climate anxiety

Worry over the planet’s future is taking a toll on emotional well-being, researchers say. Here’s how to cope so we don’t lose hope for our planet and for ourselves.

Insuring our uncertain future

VIDEO: Is the disaster insurance industry hurtling toward a climate crisis? Learn how we can shore up programs that buffer the financial devastation that follows floods, fires and hurricanes — and help individuals and communities strengthen their climate resilience.

Scientists can’t agree about Chernobyl’s impact on wildlife

Is Chernobyl a radioactive wasteland reeling from chronic radiation, or a post-nuclear paradise with thriving populations of animals and other life forms? Studies don’t always agree about levels of mutations and other ill effects.

What makes food ‘local’?

More people are choosing what to eat based on where it was grown, made or created. An anthropologist looks at the myriad ways we link food to place — and whether it really could make a difference.

The history of climate change offers clues to Earth’s future

PODCAST: Digging — quite literally — into our planet’s past to study its paleoclimate has shed light on bygone ice ages and hints at trouble ahead for our now-warming world (Season 2/Episode 4)

10 years after the nuclear meltdown at Fukushima Daiichi, I’m still worried

OPINION: The cleanup of the past decade at the Japanese power plant could be set back if authorities don’t properly handle a massive stockpile of contaminated water

As the Arctic warms, beavers move in

Scientists are just beginning to study the impacts of beaver dams on the tundra

How green are biofuels? Scientists are at loggerheads

Replacing gasoline with ethanol has changed landscapes across the globe as grasslands and forests give way to cornfields. Researchers are deeply divided over what this means for the planet. Here’s the science behind the conflict.

Save the microbes!

OPINION: Recent data suggest that microbial diversity is under threat — which puts the entire planet at risk

How lunar cycles guide the spawning of corals, worms and more

Many sea creatures release eggs and sperm into the water on just the right nights of the month. Researchers are starting to understand the biological rhythms that sync them to phases of the moon.

Bee gold: Honey as a superfood

From pesticide detox to increased longevity, the benefits of the sweet stuff go well beyond simply nourishing the hardworking insects in the hive

Lyme and other tick-borne diseases are on the rise. But why?

The complex interplay of ticks, their habitats and hosts — along with changes in land use and climate — may be enabling the spread of the pathogens they carry

What did ancient people eat? Scientists find new clues in old pottery

Remnants of molecules and microbes in shards of cooking pots help researchers reconstruct prehistoric cuisines. On the menu: stews, cheese and fermented drinks.

Effects of a fence

A satellite image reveals how humans and their herds are changing the Arctic from the ground up

Edith’s checkerspot butterfly: Checkered past, uncertain future

How do animal populations respond to climate change? After studying the same butterfly and its habitats for decades, two biologists explain that it’s complicated — but endlessly intriguing.

Sizzling science: How to grill a flavorful steak

Want to learn how cooking transforms beef’s flavor? Meat scientists have the answers.

A lifetime of climate change

Researcher Arun Agrawal has lived three decades on either side of a watershed: the United Nations Framework Convention on Climate Change, signed 30 years ago this June. His 60 years are a window into how far we have come, and how far there is to go.

Blessed are the (tiny) cheesemakers

Cheese is not just a tasty snack — it’s an ecosystem. And the fungi and bacteria within that ecosystem play a big part in shaping the flavor and texture of the final product.

Quest to secure the world’s vanishing ice

Glaciologists dream of a cold-storage vault in Antarctica to preserve key samples of the paleoclimate

The tricky task of tallying carbon

To slow or stop global warming, the world agrees it must cut carbon dioxide emissions. But monitoring each nation’s output of greenhouse gases is not always straightforward.

Looking for economic prosperity without growth

The only way for humanity to solve its environmental problems may be to abandon our quest for continual economic expansion. It’s time to study what a future of degrowth might look like, some researchers say.

The challenges and promises of climate lawsuits

Lawsuits against emissions-spewing governments and fossil fuel companies have established themselves as a key tool in the battle against climate change, but they aren’t always successful

The dating game: When food goes bad

New technologies to predict spoilage time could slash the massive waste between farm and fork

On whose green Earth?

Are we supposed to take care of the planet or should it take care of us? Willis Jenkins explains how religion shapes the conflicting views over climate change and other environmental issues.

Climate change can set the stage for violence

Worsened by global warming, drought and other environmental stressors play a role in fanning the flames of civil conflicts

The dazzling history of solar power

PODCAST: Once fringe and futuristic, this renewable energy shines brightly today as a cheap and efficient source of energy. Still, it remains controversial ­— for much different reasons. (Season 1/Episode 3)

Will the food of the future be genetically engineered or organic? How about both?

Feeding the planet — now and tomorrow — is no small task. Plant biologist Pamela Ronald says sustainability means using every tool in the toolbox.

The race against radon

Scientists are working to map out the risks of the permafrost thaw, which could expose millions of people to the invisible cancer-causing gas

Fighting fire with fire ... and fauna

Climate change is aggravating the seasonal burns that Australia has always known. They won’t be snuffed out, but new ecological strategies may help.

Make electric vehicles affordable for the rest of us

OPINION: EV subsidies are poorly designed and mostly benefit the rich. Some simple changes could make them more effective and equitable.

Pollution evolution: The little fish that could

Where other species succumbed, the killifish survived contaminated habitats. It’s a finding that could help researchers understand environmental risk factors for humans.

Russia is guilty of ecocide

OPINION: All perpetrators of environmental destruction should be held accountable

The fight against an invasive fish in California’s Clear Lake

VIDEO: Can removing carp help the lake’s native fish and keep toxic algal blooms in check?  

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