Autumn leaves in Connecticut. (Credit: Ragesoss, Wikimedia Commons)

Autumn leaves herald changes in carbon dioxide concentrations

October 31, 2014

Autumn leaves in Connecticut. (Credit: Ragesoss, Wikimedia Commons) Autumn is a season of tranformations. In the eastern United States, leaves tumble through a kaleidoscope of copper and crimson colors. In the west, rivers of golden Aspen...

Weapon shaft in Yukon ice patch (Credit: Yukon Government)

Warming world uncovers frozen past

October 24, 2014

What’s that smell? If you are on an ice patch in the Yukon Territory in Canada, the answer might be millennia-old caribou dung. Weapon shaft in Yukon ice patch (Credit: Yukon Government) In 1997, sheep hunters...

Colorful gum drops

The Science of Sugar

October 19, 2014

With Halloween just around the corner, candy is on the brain. So it’s fitting that the American Chemical Society has chosen “The Sweet Side of Chemistry–Candy” as the theme for this year’s celebration of National Chemistry...

The iridescent blue leaves of Selaginella. Courtesy of The Royal Society.

It’s not easy being blue (for plants)

October 10, 2014

Scientists have found tropical plants that perform “delayed greening,” a process of postponing the development of chlorophyll to protect young leaves from predators and potential UV damage. Interestingly, researchers have also found a few trees with blue...

The Aqua satellite detected hot spots where the King Fire burned through scrublands early last week. (Credit: NASA image courtesy Jeff Schmaltz, LANCE MODIS Rapid Response Team at NASA GSFC.)

Fighting fires with science

September 26, 2014

The King Fire blazed across headlines earlier this month when it morphed from a minor incident near the hamlet of Pollock Pines, California, into a massive wildfire that has since scorched more than 140 square miles of parched, rugged...


Good news on ozone layer should spur climate action

September 16, 2014

For the first time since 1980, the ozone layer that shields us from harmful radiation is repairing itself after being eaten away over decades by human-produced chemicals. The good news comes just in time to celebrate...

Researcher with skeleton of Dreadnoughtus schrani

Meet Dreadnoughtus and Dendrogramma, New Species Great and Small

September 14, 2014

Last week, scientists announced two incredible discoveries of new species, one an enormous land animal and the other a tiny marine creature. Researcher Kenneth Lacovara with the skeleton of Dreadnoughtus schrani. Image: Kenneth Lacovara Measuring nearly...

Chemistry Safety

Safety in the Chemistry Lab

September 1, 2014

After a series of tragic accidents related to the “rainbow experiment” in high school chemistry labs, the United States Chemical Safety Board (CSB) took the unprecedented step of releasing a video safety message to warn educators...