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14 January 2015, 11:48 PM ET
Is there a future for nanoscience and nanoscale technology?
14 January 2015, 11:33 PM ET
The writing is on the wall that more and more states are going to legalize cannabis in various ways and that access will become easier and easier.
14 January 2015, 10:26 PM ET
What's behind perpetually lousy moods.
14 January 2015, 10:26 PM ET
Medical marijuana is legal in some states, but debate rages on about whether the health benefits outweigh the risks.
14 January 2015, 10:19 PM ET
Heart disease, or cardiovascular disease, encompasses a range of conditions. The root of heart disease is when that blood flow is blocked.
14 January 2015, 10:06 PM ET
Beryllium is one of the lightest metals and has one of the highest melting points among the light metals.
14 January 2015, 10:04 PM ET
Aquifers are underground layers of rock that are saturated with water that can be brought to the surface through natural springs or by pumping.
14 January 2015, 09:08 PM ET
What if you could power your fitness tracker just by taking a stroll around the block?
14 January 2015, 08:00 PM ET
People whose blood type is A, B or AB have an increased risk of heart disease and shorter life spans than people who have type O blood, according to a new study.
14 January 2015, 06:50 PM ET
Drugs likes ecstasy that people take at music festivals may leave a mark on the local waterways.
14 January 2015, 03:53 PM ET
Researchers are tuning in to urban seismic noise, the man-made signals from human activity, to view geologic structures and track the rhythms of cities.
14 January 2015, 03:14 PM ET
Many people wake up in the middle of the night, unable to move a muscle, while feeling as though a frightening shadow is floating near their bed. Two neuroscientists propose an idea to explain the eerie experience.
14 January 2015, 03:00 PM ET
NASA data shows that average sea ice totals have dropped significantly, with a precipitous fall between 2002 and 2008. Sea level rise is a direct result of sea ice loss.
14 January 2015, 01:49 PM ET
People who walk for part of a marathon have less muscle pain and fatigue than those who run the whole way, but both groups finish in similar times, a new study finds.
14 January 2015, 01:00 PM ET
A new mobile app is bringing skeletons to life at the Smithsonian's National Museum of Natural History in Washington, D.C.
14 January 2015, 11:29 AM ET
Huddled in a dark room at the New York Public Library, a cartographer, a curator of rare books, and a handful of scientists crowded around a camera ringed by colored lights. All eyes were trained on a small, copper sphere about the size of a grapefruit: T
14 January 2015, 11:28 AM ET
The Lenox Globe, a small copper sphere housed in the New York Public Library, is the oldest known surviving globe that references the New World. A team of researchers and librarians set out to create a high-resolution, digital reconstruction of the globe,
14 January 2015, 06:58 AM ET
A chance discovery in a backyard reveals a new species of scorpion, one of the oldest, which could have walked out of its watery habitat onto land.
14 January 2015, 06:57 AM ET
Scientists have long struggled to explain why zebras have dark stripes. Now, a new study suggests that the stripes help these grazers stay cool in the midday equatorial heat.
14 January 2015, 06:55 AM ET
Plains zebra in southern regions of Africa tend to have thinner, less defined stripes than plains zebra in the northern regions of their range. Thicker stripes may help zebra cool their bodies, a new study suggests.
14 January 2015, 06:51 AM ET
How hard was it to play kottabos? An art historian enlisted her students to find out. The results were messy.
14 January 2015, 03:06 AM ET
New fitness trackers that claim to measure stress response with heart rate variability may not have the computing power or context to provide accurate measurements.
14 January 2015, 12:50 AM ET
Research has shown that marijuana can be effective as a substitute for treating opioid addicts and preventing overdoses.
14 January 2015, 12:20 AM ET
During these dark winter months, spare a thought for artificial lights.
13 January 2015, 11:49 PM ET
Cannabis, or marijuana, is one of the oldest psychoactive substances. It is often smoked, brewed or eaten for its medicinal and recreational effects.
13 January 2015, 11:44 PM ET
Lake Vostok is one of the largest subglacial lakes in the world. It may harbor unique types of organisms.
13 January 2015, 08:13 PM ET
Frostbite is the freezing of the skin and tissue caused by excessive exposure to freezing temperatures.
13 January 2015, 07:44 PM ET
Atmospheric CO2 levels have already passed the 400 ppm mark in 2015, and it's only January.
13 January 2015, 06:22 PM ET
Insomnia is a sleep disorder characterized by difficulties falling or staying asleep, even though people have the chance for adequate sleep.
13 January 2015, 06:00 PM ET
Schizophrenia is a chronic, debilitating mental disorder characterized by distortions of thinking and perception.
13 January 2015, 03:55 PM ET
The Ebola outbreak in Liberia could be largely brought to an end by June — if the country stays on track with getting a high percentage of the people who are ill to hospitals, a new study predicts.
13 January 2015, 02:16 PM ET
The Withings Aura is a device that aims to track how long and how well you sleep, and also helps you fall asleep easier by shining calming lights and playing soothing lullabies.