简介:
https://www.bbc.co.uk/iplayer/episode/b0bb33ht/horizon-2018-3-how-to-build-a-time-machine Time travel is not forbidden by the laws of nature, but ...详情 >
简介:
Since 1977, Sam Klemke has been recording himself on film, the #selfieavantlalettre. In that same year, NASA launched the Voyager with the Golden Recor...详情 >