Size

Season 1Episode 860 minsept. 21, 2008
Size
Life has evolved into a multitude of sizes. Over the course of three billion years, life has taken on many forms--from an .02-micrometer-long bacteria to the 110-foot-long blue whale. Scientists are learning how the struggle for survival has led some animals to become small and others to get huge. Understanding the evolution of size tells us why giant dinosaurs went extinct while the first tiny mammals thrived; gives us answers to why mammoths evolved into pygmies when restricted to islands; and why carnivorous mammals have never grown to weigh more than a ton. Whether it's the speed of movement or population numbers, the biological world revolves--and "evolves"--around size.
Size has aired on sept. 21, 2008 at 19:00
Previous EpisodeNext Episode

Trailer

We do not have any trailers for this episode

Recently Updated Shows

Recently updated shows that might be of your interest.
The Great British Sewing Bee
Running

The Great British Sewing Bee

Amateur sewers take on challenges as they compete to be named Britain's best home sewer.

The Bear
Running

The Bear

Carmy, a young fine-dining chef, comes home to Chicago to run his family sandwich shop. As he fights to transform the shop and himself, he works alongside a rough-around-the-edges crew that ultimately reveal themselves as his chosen family.

GenreDrama, Comedy, Food
See No Evil
Running

See No Evil

See No Evil pieces together the truth when shocking surveillance footage reveals breakthrough clues to solve a murder.

GenreDrama, Crime, Mystery
Grantchester
Running

Grantchester

Eavesdropping on the life of Sidney Chambers, a charismatic, charming, crime-fighting clergyman, and his partner in crime Police Inspector Geordie Keating, became a highlight for the audience who revelled in their on screen partnership. Geordie's plain-speaking, down to earth approach to policing complemented Sidney's more gentle technique of coaxing information from witnesses and suspects. Their unlikely pairing became a true friendship as each offered a different insight into the crimes they unravelled.

GenreDrama, Crime, Mystery
RuPaul's Drag Race
Running

RuPaul's Drag Race

RuPaul's Drag Race is a Primetime Emmy Award winning American reality competition television series, hosted by five time Emmy Award Winning Host and international Drag superstar RuPaul. The show features drag queen contestants competing in weekly challenges such as photo shoots, comedy performances and stomping the runway in the hopes of avoiding the bottom two - where they will have to lip sync for their lives.