This Friday (December 21) marks the December solstice—the shortest day of the year in the Northern Hemisphere, and the longest day of the year in the Southern Hemisphere. The maximum difference in daylight between the June solstice and the December solstice is a whopping five hours and 50 minutes! As schools wind down for holidays, take some time to introduce the solstice through Earth science, … Continue reading Io Saturnalia! Throw Some Shade! Use Science, Physics, and Culture to Teach the Solstice to Your Students
SCIENCE Animals with skeletons did not exist before about 550 million years ago. Then, suddenly, shells, exoskeletons, and skeletons showed up in the biological record. Why? (Science) A few of these ancient, armored species are still around. Teachers, scroll down for a quick list of key resources in our Teachers Toolkit. Discussion Ideas Life on Earth has been around for about three billion years, but … Continue reading How Did Animals Get Their Skeletons?
By Elaine Larson What do fresh water availability, climate change, the future of energy, air quality, land management, and the search for life in space have in common? They are all topics investigated through a comprehensive new collection of online lessons for middle and high school Earth and environmental science classrooms, developed with funding from NSF and in partnership with The Concord Consortium, a prominent … Continue reading The High-Adventure Science Collection