Ships harnessed winds as the primary means of propulsion for many centuries before steam engines took center stage in the 1800s; it's quite poetic how maritime travel was greenhouse gas-free long ...

Space travel technology has advanced so much within the last 53 years. What used to be impossible is now possible, and it seems like the tech just keeps on progressing. But amidst the smoke of rocket ...

The Courant Institute's Christiana Mavroyiakoumou, above at Central Park's Conservatory Water, and the University of Michigan's Silas Alben studied how sails behave during a wide range of tacking ...

Sails have been in use to propel ships across lakes and oceans for thousands of years. They're simple tools that use the wind to move vessels through the water — and in some cases, across the land.