Mary Bagley

On the Big Island of Hawaii, one of the world's most active volcanoes has been spewing lava since 1983.

By Mary Bagley Published 8 May 18

The only active volcano on mainland Europe is famous for destroying the cities of Pompeii and Herculaneum.

By Mary Bagley Published 20 December 17

The eruption of the Krakatoa volcano in 1883 was one of the most deadly in modern history.

By Mary Bagley Published 15 September 17

Mount Etna is Italy's largest active volcano. It is also the volcano with the longest record of continuous eruption.

By Mary Bagley Published 28 February 17

A dramatic burst of evolutionary change, called the Cambrian Explosion, occurred during this period.

By Mary Bagley Published 27 May 16

The Precambrian was the first super eon of Earth’s history, lasting from about 4.6 billion to 542 million years ago.

By Mary Bagley Published 3 May 16

Liquid is a state of matter between solid and gas. Molecule are farther apart from one another, giving them space to flow and take on the shape of their container.

By Mary Bagley Published 24 July 14

Solid is a state of matter in which the molecules are packed closely together and usually arranged in a regular pattern. A solid object has a fixed shape and volume.

By Mary Bagley Published 23 July 14

In many ways, the history of civilization is the history of chemistry. Humans have always sought to identify, use and change the materials in our environment.

By Mary Bagley Published 31 May 14

Did you know that Easter eggs are wonderful materials for fun science projects? Try some of these eggs-periments and find out how interesting your eggs can be!

By Mary Bagley Published 27 March 14

Brightly colored materials in your kitchen can be used to make natural dyes for Easter eggs.

By Mary Bagley Published 21 March 14

The Devonian Period occurred from 419.2 million to 358.9 million years ago. It is often known as the “Age of Fishes."

By Mary Bagley Published 22 February 14

These simple plant science experiments will sharpen your little ones’ interest in seeds and plants.

By Mary Bagley Published 21 February 14

The Silurian Period occurred from 443 million to 416 million years ago. It was a time of great environmental changes on Earth and saw the first evidence of life on land.

By Mary Bagley Published 20 February 14

The Triassic Period occurred between 251 million and 199 million years ago. It was a time when life outside of the oceans began to diversify.

By Mary Bagley Published 11 February 14

The Permian Period lasted from 298.9 million to 251.9 million years ago. Two groups of animals that dominated the period would later branch into mammals and reptiles.

By Mary Bagley Published 8 February 14

The Quaternary Period is a geologic time period that encompasses the most recent 2.6 million years — including the present day.

By Mary Bagley Published 6 February 14

Louis Pasteur was a French chemist who proved that germs cause disease, developed vaccines for anthrax and rabies and created the process of pasteurization.

By Mary Bagley Published 31 January 14

Here are some fun ways to demonstrate principles of fluid dynamics.

By Mary Bagley Published 15 January 14

Is Christmas too slow in coming? Why not liven things up with a little fun and interesting science? These activities are sure to while away some of those holiday doldrums.

By Mary Bagley Published 11 December 13

In this holiday science experiment, find out what dyes were used to make your favorite colorful candies.

By Mary Bagley Published 10 December 13