A New Hue of Green? Scientists in California say they've found one Scientists have discovered a new color... but you can only see it through a laser. How did scientists make the discovery and what could it mean for how we see color? Matthew Cloutier
After nearly 50 years cooped up inside, Rockalina the turtle finds the great outdoors Rockalina was an adult eastern box turtle living in the wild when she was taken into a New York home in 1977. When a reptile rehabilitation center got a hold of her this February, they worried for her survival. Alina Hartounian
Mercury, Venus and Saturn to delight stargazers in a parade across the sky The pre-dawn sky will feature a glowing crescent moon, joined by planets Mercury, Venus and Saturn. Alana Wise
Air pollution still plagues nearly half of Americans. That does a number on our health Despite improvements in air quality in past decades, 156 million Americans still breathe in too much soot or ozone, says the annual State of the Air report from the American Lung Association. Alejandra Borunda
NIH autism study will pull from private medical records The National Institutes of Health plans to pool information from private sources like pharmacies and smartwatches. Alana Wise
Environmental groups say Trump administration violated their free-speech rights A lawsuit alleges the Trump administration violated the free-speech rights of nonprofits and municipalities that have had federal funding for climate and environmental projects frozen or cancelled. Michael Copley
Trump wants a Golden Dome over America. Here's what it would take Experts are divided whether a new missile defense system for the U.S., inspired by Israel's Iron Dome, would be worth the cost. Geoff Brumfiel
Need Earth Day optimism? Here are some environmental do-gooders in your backyard At a time when communities feel fractured, here's a look at online communities taking a pragmatic approach to changing the world for the better. Alina Hartounian
Into the barn: The joys of spring lambing season Spring brings lambing season, a time of hard work and long hours for farmers. But it's also a time made joyful by cuddly newborns. Brian Mann
Destroying endangered species' habitat wouldn't count as 'harm' under proposed rule The Trump administration is reinterpreting a key word in the Endangered Species Act that could have big consequences for species at risk. Jonathan Lambert
