RT @BBCAmos: This model of the #Chicxulub #crater formation covers less than 10 mins. Look at the km scale. Colossal doesn’t beg… twitter.com/i/web/status/7…
RT @BBCAmos: This model of the #Chicxulub #crater formation covers less than 10 mins. Look at the km scale. Colossal doesn’t beg… twitter.com/i/web/status/7…