13 May
2014
13 May
'14
12:45 a.m.
Has it only been a year? The hypothesis is off, again: http://www.nature.com/news/prehistoric-impact-idea-smacked-down-1.15194 On 21 May 2013 I wrote:
The on-again, off-again Younger Dryas impact hypothesis is on again: http://www.pnas.org/content/early/2013/05/17/1301760110