16 October 2014, 07:04 PM ET
Although Ebola is not a very contagious virus in general, it carriers a higher risk for health care workers. Here's what we know about Ebola's risk to health professionals.
16 October 2014, 04:35 PM ET
Millions of people across North America will have a chance to observe a partial solar eclipse next week, weather permitting.
16 October 2014, 03:24 PM ET
The iFit Active is a fitness tracker that aims to measure your exercise, diet and sleep. Here's a review of the device and how it performed in several areas.
16 October 2014, 02:00 PM ET
Tornadoes are touching down in clusters more often than 50 years ago.
16 October 2014, 01:55 PM ET
Some comatose patients may be aware despite being uncommunicative, and scientists have found a new way that may help identify these patients.
16 October 2014, 01:34 PM ET
Don't expect the polar vortex to pummel the eastern United States this winter.
16 October 2014, 11:32 AM ET
A mosaic on the floor of a vast Greek tomb shows the reluctant bride Persephone being carted off to the underworld with Hades, archaeologists announced today (Oct. 16).
16 October 2014, 07:45 AM ET
Not unlike humans, male tree frogs call on females to begin the mating game, and females prefer long calls.
16 October 2014, 07:28 AM ET
An ambitious group of students is building a human-powered water vehicle that they hope will set a new world speed record.
16 October 2014, 07:25 AM ET
As automobiles incorporate more navigation and wireless communication technologies, could these super-connected cars become increasingly vulnerable to hackers?
16 October 2014, 07:18 AM ET
What causes the weird sounds produced by skipping rocks across a frozen lake?
16 October 2014, 03:07 AM ET
While the use of air power isn’t new, or exclusively dependent on modern and sophisticated technology, how it has been used has changed over time.
16 October 2014, 01:59 AM ET
As decriminalization efforts take off, scientists aim to understand marijuana's adverse health effects.
16 October 2014, 12:38 AM ET
Ebola virus disease (EVD) is a rare and often-fatal infection caused by one of the five strains of the Ebola virus.
15 October 2014, 08:32 PM ET
Spiny on the outside, sweet on the inside, pineapples are one fantastic fruit.
15 October 2014, 08:00 PM ET
Kangaroos are marsupials native to Australia. Their babies are called joeys and they live in groups called mobs.
15 October 2014, 06:32 PM ET
Actor Alan Alda and mathematician Steve Strogatz regaled a crowd of New York's business elite at the National Museum of Mathematics' "Chaos Ball."
15 October 2014, 05:40 PM ET
Genetic sequencing confirms the epidemic in West Africa is unrelated to the new outbreak that occurred in Central Africa and was quickly contained.
15 October 2014, 05:01 PM ET
Depending on whom you ask, e-cigarettes are either a great tool to get people to quit smoking or another way to get people hooked on nicotine.
15 October 2014, 04:15 PM ET
The ancestors of modern-day kangaroos, giant marsupials with rabbitlike faces, may have walked upright on two feet, sans any hopping, a new study finds.
15 October 2014, 02:00 PM ET
The unassuming rock goby, a small fish that can be found in rock pools around the United Kingdom, southern Europe and North Africa, is a master of camouflage, a new study finds.
15 October 2014, 01:36 PM ET
The second health care worker to test positive for Ebola should not have traveled on a plane from Ohio to Texas the day before she showed symptoms of the disease, the head of the Centers for Disease Control and Prevention said today.
15 October 2014, 12:14 PM ET
The catastrophic 1934 drought is one of the worst North America droughts on record, and was caused, in part, by an atmospheric condition that may have led to the current drought in California, a new study finds.
15 October 2014, 11:48 AM ET
A health care worker who tested positive for Ebola flew on a plane the day before she developed symptoms of the deadly disease, the Centers for Disease Control and Prevention announced today.
15 October 2014, 10:05 AM ET
Amazing images every day!
15 October 2014, 09:09 AM ET
A second health care worker in Dallas has tested positive for Ebola after caring for a patient who had the disease, the Centers for Disease Control and Prevention said today.
15 October 2014, 08:34 AM ET
A mysterious stone slab from the 12th century B.C. is a combination sundial and moondial, a new study finds. The slab would've helped ancient skywatchers track the movements of the sun and moon during heavenly events.
15 October 2014, 07:36 AM ET
Check out these photos of a combination sundial-moondial dating to the 12th century that was discovered near Rostov, Russia. Archaeologists say the markings on the artifact correspond to positions of the sun and moon throughout the year.
15 October 2014, 07:27 AM ET
The U.S. Department of Defense released a new report Oct. 13 that says climate change poses an "immediate risk to national security." The so-called road map is designed to help the military navigate and prepare for increasing global temperatures.
15 October 2014, 07:16 AM ET
Pairing up might seem to be a good protection against sexually transmitted diseases, but STDs seem less likely to promote monogamy than promiscuity in most evolutionary scenarios, new research suggests.
14 October 2014, 07:17 PM ET
It may take more than a month for symptoms of head lice to show.
14 October 2014, 06:56 PM ET
The rats that dart between trashcans and crawl across subway tracks in New York may harbor some alarming diseases, according to a new study.