feed info

67,616 articles from Yahoo!

Love avocados? Thank the toxodon

Given avocado’s popularity today, it’s hard to believe that we came close to not having them in our supermarkets at all. In my new book “Avocado: A Global History,” I explain how the avocado survived a series of ecological and cultural close calls that could have easily relegated them to extinction or niche delicacy. Instead, the avocado persevered, prospered – and became one of the most...

NASA to fly a football stadium-sized high-altitude balloon to study light from newborn stars

NASA's latest mission won't actually reach space – but it will come very close, with a massive observation craft made up of a football stadium-sized high-altitude balloon, along with a special stratospheric telescope instrument that can observe wavelengths of light blocked by Earth's atmosphere, cast from newly-formed stars. The mission is called the 'Astrophysics Stratospheric Telescope for...


THURSDAY 23. JULY 2020


China launches Mars probe in space race with US

China launched a rover to Mars on Thursday, a journey coinciding with a similar US mission as the powers take their rivalry into deep space. The two countries are taking advantage of a period when Earth and Mars are favourably aligned for a short journey, with the US spacecraft due to lift off on July 30. Engineers and other employees cheered at the launch site on the southern island of Hainan...


WEDNESDAY 22. JULY 2020


Scientists flock to mysterious 'blue hole' off Florida's Gulf Coast

Scientists are flocking to Florida’s Gulf Coast for a glimpse of a mysterious 425-feet-deep "blue hole" on the ocean floor. The glowing mystery hole, about 155 feet below the water’s surface, is similar to the sinkholes seen on solid land, according to the National Oceanic and Atmospheric Administration. Surprisingly, the first reports of blue holes came from fishermen and recreational...

Reef tales: candid cams reveal shark populations in decline

An unprecedented global survey has revealed a shocking decline in the number of reef sharks, with the predators "functionally extinct" on nearly 20 percent of sites studied. The four-year study used more than 15,000 baited and remotely operated cameras -- so-called "chum cams" -- to obtain the first comprehensive picture of where reef sharks are thriving and where they are virtually non-existent....

Climate crisis: First active leaks of methane found on Antarctic seabed

Antarctica is estimated to contain as much as a quarter of Earth’s marine methane, and scientists have now revealed the first leak of the gas from the seabed, prompting major concerns about the impact on the global climate crisis.Methane is a particularly powerful greenhouse gas due to its ability to absorb heat. Over a 20-year period, a kilogram of methane warms the planet as much as 80 times...

Spaceflight and Tethers Unlimited team up on deorbiting system for satellite carrier

Seattle-based Spaceflight Inc. says it'll use a notebook-sized deorbiting system developed by another Seattle-area company to deal with the disposal of its Sherpa-FX orbital transfer vehicle. The NanoSat Terminator Tape Deorbit System, built by Bothell, Wash.-based Tethers Unlimited, is designed to take advantage of orbital drag on a 230-foot-long strip of conductive tape to hasten the fiery...


TUESDAY 21. JULY 2020


NASA's Mars 2020 rover and helicopter are nearly ready for launch

Ahead of next week’s launch window opening --wherein NASA will have from July 30th to August 15th to get the mission underway -- The Space Foundation sat down with NASA leadership to discuss the goals, challenges and opportunities afforded by NASA’s ninth mission to the surface of Mars. This time NASA plans to send its most capable rover to date, Perseverance, Zurbuchen...