09 October 2014, 08:37 AM ET
On Mars, the evidence for life could be concealed in rocks that resemble some of Earth's most extreme environments. Scientists from the SETI Institute will spend five years exploring these unusual geologic sites to learn where and how to look for life.
09 October 2014, 07:55 AM ET
Even people who aren't diehard fans of the "Star Wars" films will likely remember C-3PO and R2-D2. These sci-fi creations provided a glimpse of how robots could be used in the future, but how close is the world to making its a real R2-D2?
09 October 2014, 07:21 AM ET
The discovery of extraterrestrial beings — be they slimy microbes or little green men — would dramatically change the way we humans view our place in the universe. But would it shatter religion? Well, that depends on what you believe.
09 October 2014, 07:12 AM ET
Frigid lakes bombarded by UV radiation and boiling, acidic springs are some of the otherworldly Earth environments where scientists plan to hunt for clues to life on Mars.
09 October 2014, 04:53 AM ET
Books adapted for the screen regularly rack up critical acclaim – think of Life of Pi, Argo, 12 Years a Slave, The Wolf of Wall Street, Hunger Games, Harry Potter, Twilight.
09 October 2014, 04:41 AM ET
Methods of diagnosing psychotic illness haven’t changed in the past 15 to 20 years — psychiatrists rely on observing symptoms, then make informed guesses about the best course of treatment.
09 October 2014, 04:19 AM ET
When disaster strikes, are you prepared? Are your pets?
08 October 2014, 09:40 PM ET
The Mariana Trench reaches more than 7 miles below the surface of the Pacific Ocean.
08 October 2014, 09:05 PM ET
A woman's body goes through a number of changes in the earliest stages of pregnancy. Here are 10 clues to help a woman figure out whether she's pregnant.
08 October 2014, 09:01 PM ET
Angkor Wat in Cambodia is one of the largest religious monuments ever constructed.
08 October 2014, 06:26 PM ET
Tesla Motors is set to make a big announcement on Thursday (Oct. 9), ending more than a week of speculation after CEO Elon Musk shot off a mysterious tweet about his electric car company's next move.
08 October 2014, 03:40 PM ET
The elegant shape of the violin evolved over a period of 400 years, largely due to the influence of four prominent families of instrument makers, a new study finds.
08 October 2014, 03:33 PM ET
Five U.S. airports will implement screening some travelers for Ebola, starting this week, officials said.
08 October 2014, 03:21 PM ET
Americans may be living longer than ever -- Life expectancy at birth for the U.S. population reached a record high of 78.8 years in 2012, according to the report from the Centers for Disease Control and Prevention.
08 October 2014, 02:55 PM ET
The little things people take for granted — like holding a cherry without crushing it, or the soft touch of a loved one's hand — are beyond the reach of many amputees. But a new kind of prosthetic restores sensation and relieves pain, researchers say.
08 October 2014, 01:24 PM ET
A Dallas hospital spokesman says Thomas Eric Duncan, the first Ebola patient diagnosed in the United States, has died. (Oct. 8)
08 October 2014, 01:01 PM ET
Dating back to around 40,000 years ago, cave paintings in Indonesia caves depicting hand stencils and pig-deer may be the oldest ever found.
08 October 2014, 01:00 PM ET
Paintings of mini buffalos, warty pigs and human hands inside caves in Indonesia could be among the oldest examples of cave art in the world, a new study finds. The paintings challenge Europe's standing as the birthplace of prehistoric cave art.
08 October 2014, 11:25 AM ET
The moon turned an eerie blood-red hue during a total lunar eclipse early Wednesday (Oct. 8) in an epic skywatching treat for amateur astronomers. See the amazing photos and their impressions of the lunar event.
08 October 2014, 11:24 AM ET
Thomas Eric Duncan, a Liberian man who was being treated for Ebola in Texas, died today, according to the hospital,
08 October 2014, 10:52 AM ET
Lab-grown penises could one day grace the groins of men who have congenital problems, complications from cancer or traumatic injuries.
08 October 2014, 10:24 AM ET
Amputees wearing a new prosthetic device regained their sense of touch and were also cured of their phantom pain.
08 October 2014, 09:59 AM ET
This year's Nobel Prize in physics was awarded to three Japanese scientists for the invention of blue light-emitting diodes (LEDs), a technology that has touched society in innumerable ways and enabled technologies that Americans take for granted every da
08 October 2014, 09:31 AM ET
The full moon darkens and grows reddish during a total lunar eclipse early today that dazzles observers around the world.
08 October 2014, 07:13 AM ET
Antibiotics save countless lives and are some of the most prescribed medications, but the bacteria and microbes they fight against can become resistant to them.
08 October 2014, 07:05 AM ET
A list of the winners of the Nobel Prize in Chemistry, including Marie Curie, Roger Kornberg and Otto Hahn.
08 October 2014, 06:35 AM ET
This year's Nobel Prize in Chemistry has been awarded to three scientists for developing a type of microscopy that could reach the nanodimension and reveal the inner workings of live cells at work.
08 October 2014, 03:59 AM ET
A stimulant called DMBA has been lurking in at least 12 weight loss and sports supplements, some of which are sold in mainstream vitamin shops, according to a new study.
07 October 2014, 11:05 PM ET
Despite yielding $300 million in statewide savings, Ohio's green energy standards are now on hold.
07 October 2014, 08:17 PM ET
Watermelons may be mostly water but these refreshing fruits are soaked with nutrients.
07 October 2014, 07:22 PM ET
The two-legged beast may have chomped on smaller dinosaurs and lizards some 200 million years ago, while living in an ancient rift valley, dotted with erupting volcanoes and once thought too inhospitable for dinosaur life.
07 October 2014, 05:59 PM ET
Weather prospects for Wednesday's total lunar eclipse are great for observers hoping to catch a glimpse of the 'blood moon' from around the United States.