http://xml.channel.aol.com/xmlpublisher/fetch.v2.xml?option=expand_relative_urls&dataUrlNodes=uiConfig,feedConfig,localizationConfig,entry&id=686579&pid=686578&uts=1249758154

http://www.aolcdn.com/ke/media_gallery/v1/ke_media_gallery_wrapper.swf

'Dropped Like a Rock'

A tour helicopter and small plane plunged into the Hudson River between Manhattan and New Jersey Saturday after colliding in the air. "There was a loud pop, almost like a car backfire," said Buzz Nahas, an eyewitnesss. "The helicopter dropped like a rock." Here, emergency workers look for debris.

Robert Mecea, AP

Robert Mecea, AP

http://xml.channel.aol.com/xmlpublisher/fetch.v2.xml?option=expand_relative_urls&dataUrlNodes=uiConfig,feedConfig,localizationConfig,entry&id=686677&pid=686676&uts=1249837774

http://www.aolcdn.com/ke/media_gallery/v1/ke_media_gallery_wrapper.swf

The 7 Sharpest Breeds

To many dog lovers out there, this study may not come as a surprise. According to a recent canine IQ test, the average dog is just about as smart as a 2-year-old child. And the mental abilities of the smartest breeds are on par with those of a 2 1/2-year-old kid, the findings show. So which dogs are the smartest? Click through to see the top 7 breeds:

7. Labrador retrievers

jupiterimages

jupiterimages

http://xml.channel.aol.com/xmlpublisher/fetch.v2.xml?option=expand_relative_urls&dataUrlNodes=uiConfig,feedConfig,entry&id=375286&pid=375285&uts=1249784416

http://cdn.channel.aol.com/cs_feed_v1_6/csfeedwrapper.swf

The Effects of Global Warming

An ongoing study finds the world's glaciers are melting at an alarming rate. Alaska's Gulkana glacier, pictured here, is one of three benchmarks for thousands of other glaciers that scientists say are disappearing. "Basically, in the past 10, 15 or 20 years these three glaciers are wasting away," said the lead researcher on the study.

Rod March, USGS

Rod March, USGS