Ocean-bound scientists drilling for new clues about dinosaur extinction event

On April 14, scientists will begin collecting new samples from the Chicxulub impact crater, remnant of an asteroid that crashed into Earth 66 million years ago and caused the extinctions of 75 percent of the planet's species, including the dinosaurs. The international team includes two Penn State researchers, Tim Bralower, professor of geosciences, and Heather Jones, Ph.D. candidate in geosciences.