Decline of vultures and rise of dogs carries disease risks

In the yards behind the slaughterhouses—also called abattoirs—of Ethiopia, an ecological shift is unfolding that has echoes of similar crises all over the world. Species with a clear and effective ecological role are ...

Extraordinary black hole found in neighboring galaxy

Astronomers have discovered a black hole unlike any other. At one hundred thousand solar masses, it is smaller than the black holes we have found at the centers of galaxies, but bigger than the black holes that are born when ...

California mice eat monarch butterflies

Monarch butterflies possess a potent chemical armor. As caterpillars, they eat plants filled with toxic cardenolides that build up in their bodies and make them unpalatable to most—but not all—predators. In central Mexico, ...

Possible chemical leftovers from early Earth sit near the core

Let's take a journey into the depths of the Earth, down through the crust and mantle nearly to the core. We'll use seismic waves to show the way, since they echo through the planet following an earthquake and reveal its internal ...

Exploring the tendrils of a ferocious fungus

It's called Armillaria ostoyae, and it's a gnarly parasitic fungus with long black tentacles that spread out and attack vegetation with the ferocity of a movie monster.

Woodrat microbiomes: It's who you are that matters most

Every mammal hosts a hidden community of other organisms—the microbiome. Their intestines teem with complex microbial populations that are critical for nutrition, fighting disease and degrading harmful toxins. Throughout ...

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