Livescience Mystery of Mercury Levels in Arctic Animals Gets Solved 2018-10-20T09:16:00.000000000-04:00 In the Canadian Arctic, a mystery has troubled scientists and local communities for decades: Why do marine animals in the western Arctic have higher mercury levels than those in the east? Exoplanet Hunters Have a New Plan to Spot Hidden 'Migrating' Worlds 2018-10-20T09:03:00.000000000-04:00 There's a telescope that can see thick rings of dust in distant star systems. And researchers want to use its data in a new way to spot hidden and migrating exoplanets. What Is Inflammation? 2018-10-19T12:48:00.000000000-04:00 Inflammation is the body's response to injury. It works to help heal wounds, but it can also play a role in some chronic diseases. This Hunk of Metal Fell From Space and Landed in California 2018-10-19T12:36:00.000000000-04:00 Iridium 70 fell out of orbit Oct. 10. A few days later, one of its fuel tanks caused a stir in central California. Here's How Researchers Made Mice with 2 Dads 2018-10-19T12:19:00.000000000-04:00 Mice with two dads are harder to make than mice with two moms. Amazing Images: The Best Science Photos of the Week 2018-10-19T10:10:00.000000000-04:00 Here are the stories behind the most amazing images in the world of science this week. A recap of the coolest photos featured on Live Science. By Middle Age, Healthy People Have Way More Cancer-Causing Mutations Than We Thought 2018-10-19T09:57:00.000000000-04:00 Our cells change over time. Apparently, a lot. This Week's Strangest Science News 2018-10-19T08:23:00.000000000-04:00 Ready to get weird? Here are some of the strangest stories on Live Science this week. Shhh … The Ice in Antarctica Is 'Singing' 2018-10-19T07:37:00.000000000-04:00 The Ross Ice Shelf in Antarctica has a haunting voice. There's No Medical Reason Not to Bake Your Grandpa's Ashes into a Sugar Cookie and Eat It 2018-10-19T07:24:00.000000000-04:00 But, like, don't.