giz explains

Why Algae Could Be The Greatest, And Trickiest, Fuel Source Of All

Why Algae Could Be The Greatest, And Trickiest, Fuel Source Of All

From powering aeroplanes to replacing nuclear energy, algae has been touted as a green energy miracle. So if our waterways are already filled with the stuff, why isn’t it filling the world’s skies with biofueled planes? Algae is a tricky creature that presents a lot of challenges and misconceptions. Here’s…

How Many Laser Pointers Would It Take To Kill A Human?

How Many Laser Pointers Would It Take To Kill A Human?

Everybody knows not to shine laser pointers in your eye. They could damage your vision! (Emphasis on could, since your eye’s blink reflex would probably protect your retina.) But what if you were an evil villain determined to make a death ray? How many laser pointers would it take to…