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01 September 2015, 02:08 AM ET
The esophagus is a tube that connects the throat (pharynx) and the stomach. Within it, muscles contract to move food to the stomach.
31 August 2015, 08:51 PM ET
Not getting enough sleep really does boost your risk of catching a cold, a new study suggests.
31 August 2015, 06:09 PM ET
By stacking up cells like Legos, scientists have found a new way to produce human tissues in the lab.
31 August 2015, 05:04 PM ET
A rare and fatal brain disorder called multiple system atrophy (MSA) may be caused by a newly discovered prion.
31 August 2015, 04:36 PM ET
A podium that dates to the Second Temple Period may have been used as an ancient lost and found or a podium for itinerant street preachers, new excavations reveal.
31 August 2015, 03:38 PM ET
Before they plunged into the icy waters of the North Atlantic, passengers aboard the Titanic may have feasted on corned beef, potted shrimp and dumplings.
31 August 2015, 03:35 PM ET
With stem-cells and a novel scaffolding, researchers are developing a new approach to lab-grown bones.
31 August 2015, 03:07 PM ET
Boston Dynamics' sure-footed humanoid bot is one of many supermobile machines that are cool and capable.
31 August 2015, 03:00 PM ET
125-million-year-old microbes were trapped in ancient seafloor rocks by minerals, leaving a record from the earliest days of the Atlantic Ocean.
31 August 2015, 01:07 PM ET
The blind spot of the human eye can be shrunk with certain eye-training exercises, a small new study suggests.
31 August 2015, 08:45 AM ET
One of the toothy stars of "Shark Week" has just phoned home after five months at sea, revealing that this longfin mako shark was a prolific and deep-diving swimmer.
31 August 2015, 08:25 AM ET
For a very small, but growing number of people, diminutive dwellings are making dreams come true.
31 August 2015, 05:56 AM ET
An elusive sea creature that boasts a vibrant golden shell covered in thick, slimy hair was recently spotted for the first time in 31 years, researchers say.
31 August 2015, 05:54 AM ET
The complicated world of hyena sex involves social hierarchies, weird and potentially dangerous courtship rituals and female pseudopenises that make forced sex impossible.
31 August 2015, 01:39 AM ET
A new report advises parents to start talking to their children early about alcohol, in order to prevent dangerous consequences.
30 August 2015, 08:42 AM ET
Common mullein, Verbascum thapsus, is a perennial herb that was first introduced into the United States in the mid-1700s. Check out these photos of a fascinating plant.
29 August 2015, 10:56 PM ET
Here are the most interesting, amazing and unusual things that happened in the world of science this week. A recap of Live Science's best.
29 August 2015, 11:41 AM ET
Though meteorologists knew Hurricane Katrina would slam New Orleans with levee-toppling intensity, today's weather forecasters are even better equipped to give notice of a storm's coming havoc.
29 August 2015, 09:48 AM ET
The most successful creatures on the planet, insects are a wild bunch. From six-legged critters with forehead eyes and breathing holes on their sides to a dragonfly with a 2.5-foot wingspan, here are some of the most amazing and wacky insect facts.
29 August 2015, 08:11 AM ET
Here are the stories behind the most amazing images in the world of science this week. A recap of the coolest photos featured on Live Science.
28 August 2015, 11:58 PM ET
The large intestine, also called the colon, is part of the final stages of digestion. It is a large tube that escorts waste from the body.
28 August 2015, 10:00 PM ET
The Galápagos are more than a life raft in Pacific currents — they actually alter the Pacific currents, and in so doing, help feed the islands' residents.
28 August 2015, 09:28 PM ET
The ability to repeat a study and find the same results twice is a prerequisite for building scientific knowledge. It may surprise you to learn, then, that scientists do not often conduct – much less publish – attempted replications of existing studies.
28 August 2015, 09:05 PM ET
There are many reasons why women and couples chose surrogates to be part of their fertility treatment.
28 August 2015, 03:38 PM ET
Louisiana's dramatically enlarged lakes and inundated marshes — stark reminders of Hurricane Katrina’s ferocity 10 years ago — are prominent in a new satellite image.
28 August 2015, 03:15 PM ET
Twin pandas born at the Smithsonian's National Zoo would have been fraternal brothers, if the firstborn cub hadn't died just five days after making its debut on Earth.
28 August 2015, 02:09 PM ET
Catastrophic volcanic eruptions about 250 million years ago spewed enough lava to cover Australia, triggering Earth's worst mass extinction, in which 90 percent of sea creatures were wiped off the face of the planet, scientists say.
28 August 2015, 01:33 PM ET
In a new study, 10 volunteers had lone star ticks feed on them for 15 minutes so researchers could closely examine the bites that these bugs cause.
28 August 2015, 12:35 PM ET
An update to the serving sizes listed on food labels will better reflect the amount of food people actually eat, the Food and Drug Administration (FDA) says. But determining an appropriate serving size may be trickier than you think.
28 August 2015, 12:34 PM ET
It has long been a mystery why some earthquakes strike towns in seemingly earthquake-proof regions, but researchers now have a potential explanation for why temblors sometimes rattle where they're not expected.
28 August 2015, 12:17 PM ET
Smoking pot frequently may lower men's sperm counts, a new study finds.
28 August 2015, 08:12 AM ET
When boy guppies pester the girls they like, it can actually make the female fish better at swimming away, a new study finds.