Scientists: 3 wolves remain at Isle Royale National Park
TRAVERSE CITY, Mich. (AP) — The gray wolves of Isle Royale National Park, which scientists have studied closely for more than half a century along with the moose on which they feed, are on the verge of disappearing as the most recent census showed that only three remain, scientists said Friday.
2015 Already Setting Heat Records
The first three months of 2015 set new global heat records, government officials announced today (April 17).
Scientists create self-powering camera
By Elly Park New York, NEW YORK - Scientists at Columbia University in New York have successfully built a camera that is capable of producing images using power harvested from the surrounding incident light. The prototype self-powering camera takes an image each second, and in a well-lit scene it can operate indefinitely. The team is led by Shree Nayar, Professor of Computer Science at Columbia Engineering, "What we have designed here is an image sensor with pixels, with this new design that can not only capture pictures but also generate power from the pixels, in order to capture the images themselves. In modern cameras photo diodes, tiny devices inside each pixels of the image sensor, measure the amount of light that falls onto it, and Nayar said he noticed that the process is similar to photo diodes used inside solar panels to harvest energy. "It turns out exactly the photo diode is also used in solar cells which are used in solar panels to harvest energy from light, except that they are being used in a slightly different circuit.
U.S. eyes new ways to prepare and win future war in space
By Andrea Shalal COLORADO SPRINGS, Colo. (Reuters) - The United States needs disruptive new technologies, new ways of acquiring equipment and bandwidth, and closer ties with global allies to stay ahead of growing challenges in space from China, Russia and others, the head of U.S. Air Force Space Command told Reuters. General John Hyten said the United States had been bracing for threats to its satellite systems for years, but continued anti-satellite testing by potential foes had fueled a fresh sense of urgency in both industry and government about the need to prepare to win a possible war in space.
Spring Skywatching: Constellation Leo Comes in Like a Lion
One of the surest signs of spring for stargazers is the constellation Leo high in the evening sky. One of the 12 traditional constellations of the zodiac, Leo is one of the best-known star patterns in the sky.
Amazonian tribe study shows how human bodily bacteria is changing
By Will Dunham WASHINGTON (Reuters) - Everyone's body is brimming with bacteria, and these microbes do plenty of good things like building the immune system and helping digestion. A study published on Friday looking at the gut, mouth and skin microbes in people from a small, isolated tribe in southern Venezuela's Amazonian jungles shows just how much modern life may be altering humankind's bodily bacteria. The Yanomami villagers, secluded from the outside world until 2009, possessed the most diverse collection of bacteria ever found in people including some never before detected in humans, said scientists whose research appears in the journal Science Advances. The researchers were surprised to learn the Yanomami's microbes harbored antibiotic-resistant genes including those conferring resistance to manmade antibiotics, considering they never had exposure to commercial antibiotics.
NASA electric rover goes for a spin
By Jim Drury Texas, Houston, U.S. - Driving NASA's Modular Robotic Vehicle (MRV) looks out of this world - and the leading space agency say this might one day be a possibility. Developed at NASA's Johnson Space Center in Houston, Texas it's a fully electric vehicle which the agency say is well-suited for busy urban environments. Turns of the steering wheel are recorded by sensors and sent to computers at the vehicle's rear where they are interpreted immediately, instructing motors in one or all of its four wheels to turn as commanded. A force feedback system in the steering wheel means the driver will feel the same resistance and sensations as a car.
NASA Probe Sees North Pole of Dwarf Planet Ceres (Video)
After spending several weeks in the shadow of Ceres, NASA's Dawn spacecraft is finally getting a close-up glimpse of the dwarf planet. The photos are the highest-resolution views of the world that Dawn has gotten since entering Ceres' orbit on March 6, NASA officials said. In future weeks, NASA hopes the mission will help scientists better understand a key mystery of Ceres: strange bright spots on its surface that, in some cases, have different temperatures than the terrain surrounding them. Mission scientists still don't know what the spots are made of.
WWII Ship Used for Atomic Bomb Tests Found 'Amazingly Intact'
The USS Independence aircraft carrier, which operated during World War II, has been located about a half mile underwater off California's Farallon Islands. Using an autonomous underwater vehicle (AUV) dubbed the Echo Ranger and a 3D-imaging sonar system, researchers have created a detailed picture of the 622-foot-long (190 m) ship, revealing that it is "amazingly intact," said scientists with the National Oceanic and Atmospheric Administration (NOAA). "After 64 years on the seafloor, Independence sits on the bottom as if ready to launch its planes," James Delgado, chief scientist on the Independence mission, said in a statement. It is a reminder of the industrial might and skill of the 'greatest generation' that sent not only this ship, but their loved ones to war," added Delgado, maritime heritage director for NOAA's Office of National Marine Sanctuaries.
Physicists try to make sense of a dark matter puzzle from space
Clamped to the International Space Station, the 7.5-tonne Alpha Magnetic Spectrometer (AMS) intercepts particles from outer space, looking for evidence of "dark matter", which has never been seen but is thought to be five times as abundant in the universe as visible matter. We are taking 1,000 pictures per second," said Stefan Schael, a professor at RWTH Aachen University. The space camera gives a new perspective on results gathered on earth at the CERN physics research centre's Large Hadron Collider (LHC) near Geneva. "At the LHC we have found exactly what we were predicting.