Watch videos from the Koshland Science Museum, the National Academy of Sciences and other highly-respected science sources.
During the last Ice Age, approximately one-third of all land was covered by glaciers. Glaciers reached as far south as New York City. This huge volume of ice reduced the amount of water in the oceans, which lowered sea level by several hundred feet. As a result, a land bridge joined Siberia to Alaska, making travel between the two continents possible. No audio.
Inner Life of the Cell illustrates the molecular structure of a human white blood cell.
Watch the continuous process of evolution starting with a single E. coli bacterium. (no audio)
This video explores the HIV life cycle and the points in the life cycle that can be affected by antiretroviral drugs.
Why Do We Age? describes some of the science behind biological aging.
We live in a multitasking world. Many of us switch our attention between texting, watching television, listening to music, surfing the internet and other tasks. Can we truly do two things at once or is multitasking diminishing our focus -- in the classroom, at home and on the road? Driving, which requires focus, highlights the challenges of switching between tasks.