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1932

Comics

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.

An amphibious rescue mission

On the edge of extinction, rare frogs and toads need more than a little love to reproduce. High-tech help, from IVF to hormone therapy, may save them.

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.

Soda taxes can’t reverse the obesity epidemic

OPINION: They might be able to help, but only if well-designed and in combination with other policies

How sustainable are fake meats?

Marketed to meat lovers, plant-based burgers like Impossible and Beyond claim to taste like the real thing and to have far lighter environmental footprints. Here’s what the numbers have to say.

The accidental tree killers

Epidemics of forest-felling diseases are on the rise thanks to globetrotting pathogens that slip through even the best defenses. To prevent further losses, scientists are turning to high-tech surveillance and detection, even canine noses.

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

Building a better edible

Foods and beverages containing cannabis are popular, but probing their effects is difficult. Scientists are scouring existing studies and knowledge from nutrition research to learn how these products interact with the body.

As coral die, protected areas aren’t enough

COMIC: The reef-builders face larger threats, scientists say. Chief among these is warming seas.

The human hand in fish evolution

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

A new history for the tropical forests of the Americas

Fossilized leaves and pollen are revealing the evolutionary past of New World tropical forests. The findings are helping to reshape predictions of what might happen to these ecosystems as the climate changes.

How cities can fight climate change

Urban activities — think construction, transportation, heating, cooling and more — are major sources of greenhouse-gas emissions. Today, a growing number of cities are striving to slash their emission to net zero — here’s what they need to do.

Happy hens, happy world

Farmers are recommitting themselves to animal welfare, and that might help the planet, too

Plant, reap, repeat — and now rethink

Replacing the annual farming cycle with perennial crops could be better for soil, water and wildlife

How truffles took root around the world

For centuries, the wild delicacy grew only in Europe. But improved cultivation techniques have enabled the pricey, odorous fungus to be farmed in new landscapes.

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