2020: The year human spaceflight returns to the United States (maybe)
Nature & Science

2020: The year human spaceflight returns to the United States (maybe)

New York (CNN Business)It’s an often-lamented fact in the space community: Since NASA retired its Space Shuttle program nine years ago, the public lost some of its interest in extraterrestrial happenings.Bold rocket startups, namely Elon Musk’s SpaceX, have done quite a bit to capture public attention. And many in the industry are hoping that launching…

The probability of human extinction is frighteningly high, scientists calculate
Nature & Science

The probability of human extinction is frighteningly high, scientists calculate

Scientists have calculated the odds of humanity going extinct in a report that makes for frightening reading. In a paper published in the journal Scientific Reports, a team of academics from the University of Oxford worked out an ‘upper bound for the background rate of human extinction’. This means that ‘anthropogenic’ or human-caused apocalypses were…

First human ancestors breastfed for longer than contemporary relatives
Nature & Science

First human ancestors breastfed for longer than contemporary relatives

The differences in dental morphology are obvious between Australopithecus africanus (TM1518 to the left) and early Homo (SK27 to the right), but these teeth are also different in their calcium stable isotopes compositions, unveiling group specific nursing behaviors. Credit: Vincent Balter By analysing the fossilised teeth of some of our most ancient ancestors, a team…