A Spirit of Charity: Restoring the Bond Between America and Its Public Hospitals. By Mike King. Secant. 352 pages. $26.95.
The population of western monarch butterflies in California dropped to a record low last year, according to a nonprofit conservation group.
This robot, created by researchers in Singapore, took 20 minutes 19 seconds to make and execute a plan to assemble an Ikea chair.
A change encounter with the colors of a squid.
Sunset over the Atlantic Ocean, viewed from the International Space Station in 2014.
Donkeys awaiting slaughter at the Goldox Donkey Slaughterhouse in Kenya. As manufacturers of a traditional Chinese medicine struggle to meet rising demand, they are looking to developing countries for donkey hides.
A promotional composite image from Knightscope showing the K5 Autonomous Data Machine.
The view from the summit of "Mount Thoreau" looking south toward the Palisades and the Northern boundary of Kings Canyon National Park.
Dr. Eske Willerslev, director of the Center for GeoGenetics at the University of Copenhagen, earlier this month.
Naomi Oreskes in her office at Harvard University's Science Center. She has been praised by climatologists for communicating climate science to the public.
A protein found in the inner ear also exists in cells that help us perceive sour tastes, according to a new study.
Evidence of a cancerous tumor was found on a bone fossil dating back 1.7 million years.
A field technician excavating the remains of an amputated limb at Manassas National Battlefield Park in October 2015. The discovery of two nearly complete sets of soldiers’ remains, 11 partial limbs and other artifacts appeared to date to the Second Battle of Bull Run, which ended Aug. 30, 1862.
A helicopter from the nearby Chinese icebreaker Xue Long arrived to pick up the first batch of passengers from the stranded Russian ship Akademik Shokalskiy.
An assortment of zebra finches studied by Sarah Woolley, a neuroscientist at Columbia University. Dr. Woolley found that finches were expert at learning the songs of their fathers for later in life, when it comes time to find a mate.
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