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A puma and her two kittens look out over San Jose, California. Cchristopher Fust

How humans threaten pumas just by being nearby

Many Americans move to rural areas to live near nature. But the mere presence of humans changes wildlife behavior in ways that may have ripple effects.
The amount of time kids are spending on mobile devices is increasing. Eric Peacock

How much screen time is good for kids?

Kids who watch educational programs such as ‘Sesame Street’ show better academic skills. But this does not mean all children can learn from educational media.
Before there was E10, in the 1970s there was ‘gasohol,’ another name for gasoline that had been blended with ethanol. eklektikos/flickr

Corn ethanol: the rise and fall of a political force

Ted Cruz opposes subsidies for biofuels and still managed to win in ethanol-friendly Iowa. Is corn ethanol starting to lose its political clout?
Protector in chief: Theodore Roosevelt with conservationist John Muir at Yosemite in 1906. U.S. Library of Congress

Who politicized the environment and climate change?

Historically, environmental causes enjoyed bipartisan support but gains by NGOs and the emergence of climate change as a social issue have created a sharp political divide.
EU and Polish flags together at anti-government demonstration in Warsaw. Kacper Pempel/Reuters

Europe has lost its Polish anchor

After years of being hailed as the shining example of post-Communist success, Poland is being depicted going ‘backward.’ What happened? And why is this significant for Europe?