RUN, BIRD, RUN Birds most likely to have survived a mass extinction 66 million years ago would have been small (as seen in this artist’s depiction), able to fly and just fine living on the ground, researchers say.
Phillip M. Krzeminski
START FROM SCRATCH The asteroid that hit Earth about 66 million years ago, wiping out most of the planet’s life, also spewed carbon dioxide into the air and heated up the climate for millennia, a new study suggests.
SOCIAL DELIVERY Researchers have observed three cases of captive female bonobos serving as helpers for pregnant females about to give birth, a behavior typically viewed as exclusive to humans. Here, a group of wild bonobos includes a mother carrying her infant.