Originally published on Thu July 18, 2013 5:28 pm
Researchers at Trinity College Dublin have some long awaited test results: After 69 years, they have captured on video a drop of pitch, also known as bitumen or asphalt.
With a camera trained on a glass funnel containing a generous dollop of the substance, so thick that it appears as a solid at room temperature, it finally happened.
You can see the dramatic moment in this video above, which proves conclusively that pitch is indeed a liquid, according to Nature.
Originally published on Thu July 18, 2013 12:02 pm
Advocates for farmworkers, especially those who grow America's leafy greens and fresh vegetables, are pushing the government to do more to protect those workers from exposure to pesticides.
Originally published on Wed July 17, 2013 6:11 pm
The environment may not come to mind when most people think about former President Bill Clinton, but on Wednesday he defended his legacy as the Environmental Protection Agency's headquarters in Washington, D.C., was renamed in his honor.
Originally published on Tue July 23, 2013 9:19 am
I recently joined President Obama on his trip through Africa, and I brought a mystery home with me. I wonder if you can help me solve it.