Editor's Note: This piece was originally published online in the UNM BioBlog on Nov. 30, 2016, written by Felisa Smith. This is part of our project to help connect the Daily Lobo audience to more members of our community.

If there were a tunnel from one side of the Earth, through the core and out the other end, how long would it take to fall through it? Biology Professor Dr. Felisa Smith discusses this classic physics question in the UNM BioBlog.

The full article can also be accessed in the print version of the Oct. 9 print issue of the Daily Lobo.

Felisa Smith is a guest columnist at the Daily Lobo. She can be contacted at fasmith@unm.edu or on Twitter @UNMpaleoecology.