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| The U.S. has resisted the metric system for more than 50 years Apr 03 2020 6:00 AM Australia adopted the metric system 50 years ago. The United States tried by passing legislation for a voluntary conversion that was largely ignored. READ MORE  |
| Just breathing or talking may be enough to spread COVID-19 after all Apr 02 2020 5:19 PM Until now, experts have said that the virus spreads only through large droplets released when people cough or sneeze, but it may spread more easily. READ MORE |
| Southern Africa may have hosted a hominid transition 2 million years ago Apr 02 2020 2:00 PM Braincases excavated from the Drimolen caves suggest Homo erectus and Paranthropus robustus may have coexisted in southern Africa. READ MORE |
| Mice's facial expressions can reveal a wide range of emotions Apr 02 2020 2:00 PM Pleasure, pain, fear and other feelings can be reflected in mice's faces, sophisticated computational analyses show. READ MORE |
| How large a gathering is too large during the coronavirus pandemic? Apr 02 2020 6:00 AM Mathematical models explain why large gatherings are especially dangerous in an epidemic, and identify how large is too large. READ MORE |
| Roughly 90 million years ago, a rainforest grew near the South Pole Apr 01 2020 5:36 PM A forest flourished within 1,000 kilometers of the South Pole, probably because of high atmospheric carbon dioxide levels and an ice-free Antarctica. READ MORE |
| How coronavirus control measures could affect its global death toll Apr 01 2020 4:40 PM Slowing the virus' spread will save millions of lives, but differences among countries could vary the pandemic's toll in different places. READ MORE |
| Lucy's species heralded the rise of long childhoods in hominids Apr 01 2020 2:02 PM Australopithecus afarensis had prolonged brain growth before the Homo genus appeared, but it still resulted in brains with chimplike neural structure. READ MORE |
| A mysterious superconductor's wave could reveal the physics behind the materials Apr 01 2020 11:05 AM Scientists finally spotted a pair-density wave in a high-temperature superconductor. READ MORE |
| This 300,000-year-old skull may be from an African 'ghost' population Apr 01 2020 11:00 AM The age of the mysterious Broken Hill fossil suggests it came from a hominid that lived around the same time as both Homo sapiens and H. naledi. READ MORE |
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