NASA climate scientist arrested in Keystone XL pipeline protest
February 14, 2013, 9:47 a.m. by Jeanna Bryner, LiveScience
The propose pipeline would carry tar sands, which environmental groups call one of the dirtiest types of oil.
Obama needs to face climate change, reject Keystone pipeline
November 13, 2012, 3:17 p.m. by Guest Columnist
Climate activist Bill McKibben says now is the time for the administration to stand up to the richest industry on Earth.
'Pipe Dreams': How TransCanada's Keystone XL oil pipeline endangers America
November 23, 2011, 1:46 p.m. by Gerri Miller
Narrator Daryl Hannah, filmmaker Leslie Iwerks and others discuss the pipeline battle.
Interactive map plots your address over 750 million years of Earth's history
The brightest star in the night sky will go dark
A shelter worker couldn't leave the dogs alone in a storm — so she slept over
Golf courses across U.S. step up to save monarch butterflies
How to use succulents as outdoor annuals
What's the deal with doodle dogs?