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The Crux

Venus's Day in the Sun: How the Transit Will Help Us Search for Other Earths

Ice bubbles

Learn how air bubbles trapped in ice have inspired a special code that can improve communication in the Arctic and Antarctica.

Air Bubbles Trapped in Ice Could Become Secret Codes in Polar Regions

The Big Crunch Theory. (Image Credit: Quality Stock Arts/Shutterstock)

The Big Crunch illustration

What is the Big Crunch theory? This theory is highly debated, but could be what happens when you hit the rewind button of the Big Bang.

The Big Crunch Theory Is Revived as Recent Data Shows Our Expanding Universe Slowing Down

The unusual radio pulses were detected by the Antarctic Impulsive Transient Antenna (ANITA) experiment, a range of instruments flown on balloons high above Antarctica that are designed to detect radio waves from cosmic rays hitting the atmosphere. (Image Credit: Stephanie Wissel / Penn State) 

Antarctic Impulsive Transient Antenna experiment

Learn more about these mysterious signals in Antarctica that could be evidence of dark matter.

Unexplainable Radio Waves Under Antarctica's Ice Defy the Laws of Particle Physics

Wind turbine efficiency

Learn how an undergraduate student at Penn State University broke a century-old math problem, and how it applies to wind turbines. 

100-Year-Old Math Problem Broken, Helping to Improve Wind Turbine Efficiency 

The green flash. (Image Credit: Yrii Kurygin/Shutterstock)

The green flash

What is the green flash? It’s often tied to pirate folklore but also commonly occurs in reality – learn what causes the flash and when to see it.

The Mysterious Green Flash at Sunset – The Science Behind the Myth and Where to See It 

(Image Credit: Emiliano Pane/Shutterstock)

Glowing mushroom

These tiny, weak signals of light may be useful to monitor the health of plants and animals.

Humans and All Living Things May Emit a Glow in Life, but Not Death

Venus's Day in the Sun: How the Transit Will Help Us Search for Other Earths

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