FireTool

Start a fire using flint, steel, magnesium shavings and some dry combustable material.

Credit: ViewDo

Harnessing Wave Energy

Energy from ocean waves seems like the ultimate in renewable fuel, yet research lags behind studies ...

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Star Trek's Warp Drive: Are We There Yet?

Marc Millis, former head of NASA's Breakthrough Propulsion Physics ...
How the Brain Changes as We Grow Up

Brains scans show how the brain's organization changes from childhood ...