Headline News International News people Debate / Hot Issues Sports Opinion/Column Unique story Periscope Entertainment National News World News English Letters Amazing News Science Special Focus Think & Talk People Animals National News World News Photo News People What's New Health New Words Picture Vocabulary Focus Fun Facts World Culture	541 Which Part of a Candle Flame Is the Hottest? 12-07-2019 540 How Do Airplanes Fly? 05-07-2019 539 Discovery of Similarities Between Europa and Earth 28-06-2019 538 Paper Airplane Pilots 21-06-2019 537 Aerobatics 14-06-2019 536 Seawater Temperature Has Dramatically Increased 07-06-2019 535 Why Did a Paper Folding Master Go to NASA? 31-05-2019 534 Jawbones Reveal the Origin of a Special Gene 24-05-2019 533 Water Capsules Replace Plastic Bottles 17-05-2019 532 Making Artificial Rain With an Unmanned Aerial Vehicle 10-05-2019 31 32 33 34 35 36 37 38 39 40