evergreen(Page 34)

Latest in evergreen

An iPhone with app icons visible.
DIY

How to make an iPhone app: part 2

By Dave Prochnow

A person holding a white iPod.
DIY

New music from an old iPod

By Laura Silver

A man in blue Popular Science coveralls holding a dumbbell made out of old CDs, pointing at the camera, and yelling.
DIY

PopSci 5-Minute Project video: CD dumbbell

By Popular Science Team

Three thin rectangular cork-plugged bottles in a row, the left one nearly full of red vinegar, the middle one half full of yellow vinegar, and the right one about a quarter full of orange vinegar.
DIY

Making vinegar at home

By Aki Kamozawa and H. Alexander Talbot

White liquid marshmallow.
DIY

The anatomy of a marshmallow

By Aki Kamozawa and H. Alexander Talbot

A packet of freeze-dried ice cream with a photo of an astronaut on the packaging.
Science

If it’s good enough for astronauts, it’s good enough for us

By Aki Kamozawa and H. Alexander Talbot

Pectin: not just for jelly
DIY

Pectin: not just for jelly

By Aki Kamozawa and H. Alexander Talbot

A burning pile of magnesium expelling white smoke against a dark blue background, with a fire extinguisher nozzle nearby setting it on fire.
DIY

Let burning metals lie

By Theodore Gray

A DIY pocket theremin.
DIY

Build a pocket theremin on the cheap

By Dave Prochnow

A person striking a block of plastic with a hammer, creating white lightning against a blue background.
DIY

Gray Matter: Trap lightning in a block

By Theodore Gray

A person wearing white work gloves striking a match on a light brown surface against a blue background.
DIY

Making a perfect match

By Theodore Gray

A person purifying silicon in a glass bowl. Top: burning magnesium in a mushroom cloud of white smoke; middle top: burning hydrogen as a flame; middle bottom: burning silane gas as white bursts; bottom: falling silicon particles.
DIY

Making silicon from sand

By Theodore Gray

Liquid nitrogen vanilla ice cream in a goblet glass with a strawberry on top and water vapor all around it.
DIY

Microcrystalline in 30 seconds

By Theodore Gray