Daddy daycare: Why some songbirds care for the wrong kids

Interspecific feeding—when an adult of one species feeds the young of another—is rare among songbirds, and scientists could only speculate on why it occurs, but now, Penn State researchers have new insight into this behavior.

Methane emissions spike: Is there one main culprit?

The level of methane in the atmosphere has risen dramatically in the last decade—and climate scientists are worried. Although there's still roughly 60 times less of it floating around than carbon dioxide, the gas heats ...

New study: Fracking prompts global spike in atmospheric methane

As methane concentrations increase in the Earth's atmosphere, chemical fingerprints point to a probable source: shale oil and gas, according to new Cornell University research published today (14 August) in Biogeosciences, ...

page 1 from 23