An artist’s rendering of an Earthlike exoplanet orbiting another. Scientists haven’t been able to measure an exoplanet’s tilt yet, but some suspect that a planet’s tilt is key to supporting life.
Carl Hart, an associate professor at Columbia University, is the author of the book “High Price,” a mix of memoir and scientific research about drug addiction.
Jo-Wilfried Tsonga of France wiped sweat from his face during the Australian Open. Researchers say their new wearable sensor can measure perspiration for conditions like dehydration and fatigue.
Icebergs near Greenland's glaciers, which are speeding up as the climate warms.
Not only can a honey bee count, it understands the concept of zero, according to researchers.
A showcase reflects a reconstruction of Ötzi’s skull, center, and his body at the South Tyrol Museum of Archaeology in Bolzano, Italy.
Creatures as diverse as the humpback whale and the ladybug all descend from the very first animal, which appeared hundreds of millions of years ago.
A bee in Austria.
The population of western monarch butterflies in California dropped to a record low last year, according to a nonprofit conservation group.
A robust ghost pipefish in waters off Indonesia. With some species of pipefish, fathers are susceptible to what scientists call the Bruce effect.
Top: Donald J. Trump; Middle: Bill Clinton: Bottom: George H.W. Bush.
The tree pipit migrates to and from Africa and Europe each year.
A spokeswoman for China’s manned space program presented a replica of the Tiangong 1 space station (left half of the model) in 2012 with a manned spacecraft, Shenzhou 9, attached.
Sister Ofelia Morales Francisco, left, and Sister Rosa Cortez in the Convento Maria Inmaculada de La Salud in Mexico. The nuns make a cough syrup, in the bottle at right, from achoques, a type of salamander vanishing from nearby Lake Patzcuaro.
An arctic fox near Helagsfjället mountain in Sweden. Foxes in the area were severely inbred until three males from a Norwegian captive breeding population turned up.
The success of this launch gives SpaceX momentum to begin developing even larger rockets, which could help fulfill Elon Musk’s dream of sending people to Mars.
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