April 21-27, 2014

Friday, Apr 18, 2014 at 10:39 AM EDT

After Year of Extremes, Investigating Effects of Climate Change

After Year of Extremes, Investigating Effects of Climate Change

For the last year and a half, there has been all manners of weather, from a bone-chilling deep freeze to searing heat, drought and fire. NBC’s Ann Curry traveled to far corners of the planet searching...

Friday, Apr 18, 2014 at 10:42 AM EDT

Study Offers Bleak Climate Change Outlook

Study Offers Bleak Climate Change Outlook

A new massive report on global warming says dangers will worsen as the climate changes.

Friday, Apr 18, 2014 at 10:33 AM EDT

2.7 Million-Year-Old Soil Found Deep Beneath Greenland's Ice

2.7 Million-Year-Old Soil Found Deep Beneath Greenland's Ice

Buried thousands of feet under Summit, the highest point on Greenland's ice sheet, is a soil born before humans walked the earth. The 2.7-million-year-old silt is a remnant of the verdant tundra that...

Friday, Apr 18, 2014 at 10:33 AM EDT

Ohio Geologists Link Seismic Activity to Fracking

Ohio Geologists Link Seismic Activity to Fracking

State geologists in Ohio have for the first time linked earthquake activity in the Marcellus Shale basin to hydraulic fracturing, confirming the suspicions of activists pushing for drilling limits in...

Friday, Apr 18, 2014 at 10:33 AM EDT

Fish-Friendly Dams? Scientists Race to Reduce Turbine Trauma

Fish-Friendly Dams? Scientists Race to Reduce Turbine Trauma

A hydroelectric dam building boom in the Pacific Northwest in the past century drove dozens of salmon runs to extinction and has cost taxpayers billions of dollars to try to save the fish that remain.

Thursday, Apr 17, 2014 at 12:00 PM EDT

The 'Zero-Emission' Engine Is Almost Ready for Prime Time

The 'Zero-Emission' Engine Is Almost Ready for Prime Time

With the aid of government spending and joint efforts by Ford and Nissan, Daimler — Mercedes’s parent corporation — aims to start selling hydrogen-fueled cars to the public as early as 2017.