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No air currents required: Ballooning spiders rely on electric fields to generate lift
Enlarge / Image from a 2018 observational study of ballooning in large spiders depicting a crab spider just as it is about to take off. (credit: Cho, M. et al., 2018/CC BY-SA 4.0) In 1832, Charles Darwin witnessed hundreds of ballooning spiders landing on the HMS Beagle while some 60 miles offshore. Ballooning is a […]
Last year, US emissions went {} 2018 uptick
Expand (charge: Cathy) Together with the last tallies done, the US Energy Information Administration (EIA) introduced its own energy-related COtwo emissions information to 2019 on Wednesday. Including all fossil fuel combustion for producing energy, heating buildingsand industrial processes, and transport. In general, EIA sets a year’s complete at 2.8% less than 2018 and equivalent to […]
Astronomers discover a strange galaxy without dark matter
Enlarge / Astronomers mapped out the stars (shown here in blue) and gas (green) of the strange galaxy known as AGC 114905. (credit: Javier Román and Pavel Mancera Piña) Three years ago, Filippo Fraternali and his colleagues spotted a half dozen mysteriously diffuse galaxies, which looked like sprawling cities of stars and gas. But unlike […]