200-Million-Year-Old Beluga Sturgeon Battling Extinction

Overfishing is bringing a frightening reality to Beluga sturgeon. The fish, prized for their egg sacks used in caviar, are now facing extinction. But scientists and engineers have a plan to help the mighty fish rebound. The sturgeon is an impressive fish—larger than some sharks, growing as long as nearly ten feet. They’re old too—as [...]