Springtime for Chicxulub: buff.ly/3vCzgMo Using markers on fishbones like tree rings, scientists have determined that the Chicxulub asteroid impact occurred during springtime in the Northern Hemisphere. IMAGE: An asteroid impact off the coast of Mexico about 66 million years ago triggered devastating flooding at a site in North Dakota (illustrated). That dino-killing strike took place in the spring, a study suggests. CREDIT: Joschua Knüppe #chicxulub #meteor #meteorimpact #dinosaurs #extinctionevent #asteroid #space #science #geology #paleontology