blogs.nature.com In a tongue-in-cheek contest of microscopic mobility, a line of bone marrow stem cells from Singapore beat out dozens of competitors to claim the title of the world's fastest cells. They whizzed across a petri dish at the breakneck speed of 5.2 microns per minute — or 0.000000312 kilometers per hour. Behind the fun is a serious goal: understanding embryo development and cancer.
Video Rating: 4 / 5
How to make designs for the Petri dish when making a kaleidoscope in this free toy making video Expert: Elliott Kwong Bio: Elliott Kwong has made kaleidoscopes in the past, and has gone to department stores to search for the right type of materials and reflective mirrors. Filmmaker: Elliott Kwong
Video Rating: 4 / 5
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