A peli-cam captures the flight of a bird on Tanzania's Lake Tanganyika. YouTube hide caption
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Friday
People view the Northern Lights over Bamburgh Castle Beach Thursday in Northumberland, England. A powerful solar flare caused the aurora borealis to be visible farther south than usual. Josh Maidwell/Barcroft Media/Landov hide caption
In this undated photo provided by the U.S. Department of Energy, a shipment of nuclear waste arrives at the Waste Isolation Pilot Plant, near Carlsbad, N.M. U.S. Department of Energy, Carlsbad Field Office/AP hide caption
13 Workers Exposed To Radiation At N.M. Nuclear Waste Dump
Intimacy in a marriage becomes even more important as we get older. Radius Images/Corbis hide caption
Thursday
Empty shelves where eggs should be at a Whole Foods Market in Washington, D.C. The store blames increased demand for organic eggs. Dan Charles/NPR hide caption
Chickens That Lay Organic Eggs Eat Imported Food, And It's Pricey
Nectarines are sorted at Eastern ProPak Farmers Cooperative in Glassboro, N.J. Mel Evans/AP hide caption
Astrophysicist Neil deGrasse Tyson hosts a new TV series called Cosmos: A Space-Time Odyssey. It's an update of the influential 1980 PBS series Cosmos: A Personal Journey, hosted by Carl Sagan. Patrick Eccelsine/Fox hide caption
Neil DeGrasse Tyson Explains Why The Cosmos Shouldn't Make You Feel Small
From Aztecs To Oscars: Popcorn's Beautiful, Explosive Journey
Wednesday
An image from a video by the COLLMOT Robotic Research Project shows a group of drones flying autonomously across a field. COLLMOT Robotic Research Project hide caption
Boy meets girl, sperm meets egg — how much does the age of each matter? James Steidl/Kyle Gruba/iStockphoto hide caption
This artist rendering provided by NASA, shows Kepler-11, a sunlike star around which six planets orbit. AP hide caption
Tuesday
A video of a crow using a jar lid as a sled has been a recent hit on YouTube. But as winter storms continue, many of us are running out of ways to enjoy the snow. YouTube hide caption
Cattle graze at a Brazilian Agricultural Research experimental farm in Planaltina in Goias state. To reduce emissions from deforestation, the Brazilian government is experimenting with grazing on integrated forest and pasture lands. Evaristo Sa/AFP/Getty Images hide caption
Vitamin E for your heart? Don't bother, new guidelines say. iStockphoto hide caption