This Tiny Fish Can Recognize Itself in Photos

Ethereal 'halo' and light arcs around the sun captured in photos of ultra-rare phenomena

Tens of Thousands of Dead Fish Wash Ashore on Gulf Coast in Texas

Microplastics are everywhere. What does that mean for our immune systems? Tiny particles of plastic turn up in our drinking water, blood and even regions of the Earth thought to be pristine—so it’s vital we learn what they’re doing to us.