Snow isn't always white; algae can make it look green, red, or orange, and scientists are trying to understand how and why these colorful patches appear.

When you splurge on a cocktail in a bar, the drink often comes with a slab of aesthetically pleasing, perfectly clear ice.

Every few decades, an idea emerges that seems impossible, collapses under scrutiny, and then quietly refuses to disappear, and cold fusion is one of them. We trace its explosive debut in 1989, the ...