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13 May 2013, 05:33 PM ET
Case studies detail ecosystems at risk.
13 May 2013, 05:30 PM ET
Sea-level rise and fall shapes coral atolls.
13 May 2013, 05:29 PM ET
A trove of thousands of stone tools and animal bones suggest human ancestors were hunting and scavenging animals at least 2 million years ago.
13 May 2013, 05:06 PM ET
From gasoline to lighter fluid, summer brings poisoning dangers.
13 May 2013, 04:53 PM ET
Properties, sources and uses of the element selenium, including information about selenium-rich foods.
13 May 2013, 04:36 PM ET
A new strain was developed using ancient grasses.
13 May 2013, 04:07 PM ET
NASA and the NSF are facing ambitious goals with slashed budgets.
13 May 2013, 04:06 PM ET
The plankton blooms occur most springs.
13 May 2013, 03:42 PM ET
The Hawaiian petrel's fossil record doubles as a time capsule for fish populations of the past.
13 May 2013, 03:16 PM ET
Mutations after conception may bring about 10 percent of congenital heart disease cases.
13 May 2013, 03:05 PM ET
Thousands of children are poisoned every year by hydrocarbons, liquids that evaporate when exposed to the air and are common in household items like lighter fluid and cleaning sprays. Care should be taken to store these chemicals safely in the home.
13 May 2013, 03:00 PM ET
Depression seems to alter the genes that regulate sleep and waking.
13 May 2013, 02:41 PM ET
A widespread frost and freeze is expected Monday night and Tuesday morning from New York to North Carolina.
13 May 2013, 02:36 PM ET
There are 300 nesting pairs in the upper Midwest.
13 May 2013, 02:35 PM ET
The two X-class solar flares erupted from the surface of the sun less than 24 hours apart.
13 May 2013, 02:31 PM ET
Researchers have developed a cloak that can guide the flow of heat around objects, making them thermally invisible.
13 May 2013, 02:30 PM ET
In a grim karmic twist, a suspected poacher illegally hunting African elephants in Zimbabwe was trampled to death.
13 May 2013, 02:02 PM ET
The largest Great Lake is superior in more ways than one.
13 May 2013, 02:01 PM ET
The winner will get $15,000 and other prizes.
13 May 2013, 02:00 PM ET
Sex supplements may contain undisclosed drugs that pose serious risks to consumers, doctors warn.
13 May 2013, 01:34 PM ET
India's birthrate is only slightly higher than America's, a report shows
13 May 2013, 01:14 PM ET
Iron is also surprisingly weak at pressure experienced in the core.
13 May 2013, 12:37 PM ET
Some astronomical sleuthing has revealed the cultic past life of a Roman tomb.
13 May 2013, 12:02 PM ET
LED lights are found in computers, cellphones and TV screens.
13 May 2013, 10:35 AM ET
P.R. Kumar answers 10 questions about science, his life and his career, and his advice is that through it all, you must be yourself.
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