Fantasy Science: T. Rex Arms Bitten Off! The claim that shorter arms helped T. rex avoid bites during feeding earns our “Knucklehead Science Award of the Week.” Apparently, dinner was costing an arm and a leg.

DNA Data Storage: Researchers use DNA to store astonishing amounts of digital information. Your two-terabyte laptop would like to stop this comparison.

Neanderthal Dentistry: Evidence of a drilled molar challenges the stereotype of unintelligent cavemen. Not bad for people supposedly struggling to figure out rocks.

Microscopic Motors: High-resolution images reveal remarkable engineering inside bacterial flagellar motors. Pretty sophisticated equipment for something called “primitive.”

“289-Million-Year-Old” Soft Tissue: A remarkably preserved reptile fossil raises questions about conventional ages. That’s quite an expiration date.

China’s Fossil Bonanza: More than 50,000 fossils point to rapid, catastrophic burial. Even the brains made it into the fossil record.

How Much Does a Cloud Weigh? This week’s Interesting Fact of the Week puts clouds on the scale. Turns out “light and fluffy” can be misleading.