Ecosystems

Climate

Here’s how some sea-loving trees ended up far from the coast

This “relict ecosystem” that’s more than thousands of years old moved inland due to warming and a rise in sea levels.

Ecosystems

Cheatgrass thrives on the well-lit urban night scene

Middle-grade campers team up with ecologists at Denver University to show that streetlights boost the growth of a reviled invasive species.

Climate

Warming cities may see more rain — and frequent flooding

Scientists are seeking to understand why and how to mop up excess precipitation.

Animals

Spiders can take down and feast on surprisingly big snakes

Snared in sticky webs and subdued by poison, even venomous snakes can become a spider’s soup.

Animals

Urchin mobs can literally dis-arm a predator

Urchins are important herbivores — but not strict vegetarians. When hungry enough, they may even rip apart their predators for lunch.

Animals

Only 3 percent of Earth’s land is unchanged by people

A sweeping survey of land-based ecosystems finds that very few still support all the animals they used to. Reintroducing lost species could help.

Animals

Analyze This: Invasive species cost the world billions each year

A new study estimates that invasive species have cost the world more than $1 trillion since 1970. That’s almost certainly an underestimate.

Animals

Rhinos, camels and bone-crushing dogs once roamed Nebraska

Scientists digging into the remnants of an ancient watering hole in Nebraska discovered evidence of an Africa-like savanna, complete with rhinos.

Climate

Urchin takeover underlies California’s vanishing kelp forests

Some 95 percent of kelp forests along its northern coast are gone. Meanwhile, sea otters are helping slow the loss of surviving kelp farther south.

Animals

Science and Indigenous history team up to help spirit bears

When scientists and Indigenous people work together, their efforts can benefit bears and people.

Animals

Explainer: Black bear or brown bear?

If you see a bear, check size, shape and more to find out what type it is.

Animals

Changing people’s behavior can make bear life better

Black bears don’t always live life on the wild side. More and more, they live near people. Here’s how people and bears can get along.