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Earth Science

United States

Alaska Shakes

December 7, 2018

Highways crumbled and buildings shook as earthquakes jolted Anchorage, Alaska, on November 30. A magnitude 7.0 quake hit first, at about 8:30 a.m. A 5.7 quake followed within minutes. The temblors set off tsunami alarms for islands and coastal areas…

Polar Bear

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What is Global Warming?

August 28, 2018

Earth’s climate is changing at an unprecedented rate. As a result, storms and droughts are becoming more intense. Temperatures are rising. Polar ice caps are melting. This is causing oceans to rise. Low coastal areas are flooding. Animals are losing…

luminous mushrooms

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What Is Bioluminescence?

August 24, 2018

Fireflies twinkle in a field. Mushrooms illuminate a dark forest. Colorful sea creatures light up the ocean. These natural light displays come from bioluminescent creatures. Bioluminescent organisms can produce their own light. Bioluminescence is a chemical reaction. It takes place…

Video

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What Are Magnets?

August 21, 2018

What do compasses, fans, and high-speed trains have in common? They all use magnets to function. Magnets are rocks or metals that create a powerful, invisible field. This field attracts other magnets and certain metals. The presence of a magnetic…

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What Are Volcanoes?

August 14, 2018

Take a bottle of soda. Shake it really hard. Gas bubbles inside the bottle cause a buildup of pressure. Twist the cap off. Pressure is released. Soda shoots everywhere. A volcanic eruption works much the same way. Pressure builds up…

Video

Science

Celestial Sight

July 30, 2018

People around the world witnessed a total lunar eclipse on Friday, July 28. Known as a blood moon for its deep-red color, the eclipse was visible in Australia, Africa, Asia, Europe, and South America at different times throughout the…

Environment

Changing the Tide for Coral Reefs

July 9, 2018

Hawaii lawmakers are on a mission to save coral reefs. On July 3, Hawaii governor David Ige signed a bill to help. It bans sunscreens containing chemicals that are harmful to reefs. It is the first bill of its kind…

Environment

An Epic Eruption

May 9, 2018

On May 3, Hawaii’s Big Island experienced a major volcanic explosion. The volcano Kilauea pushed lava and toxic gas from its vents and opened fissures, or cracks, beneath a nearby residential neighborhood. On May 4, the seismic activity caused a…

Video

Environment

Earth Day

April 1, 2016

The first Earth Day was celebrated on April 22, 1970. Energy & Waste The average American produces more than four pounds of garbage per day. Over the course of a year, that is more than 1,600 pounds of garbage per…

Environment

Water Worries

April 24, 2015

California has survived many droughts. But the current dry spell, now in its fourth year, is one of the most severe the state has ever experienced. A shortage of precipitation has left lakes, reservoirs, and other sources of water at…