Bill Sullivan receives funding from the National Institutes of Health. Water that comes straight from natural sources, dubbed “raw water,” is gaining popularity. Raw water advocates reject ...

My water bottle is attached to my hip. I carry it around the house all day, leave it by my bedside at night, and take it with me pretty much whenever I go on errands, walks, and trips. Before I ...

Primed to view any unusual behaviour by Valve as evidence of Half-Life 3's development, fans have naturally speculated that this hidden game is Gordon Freeman's long-awaited third adventure. But ...

More and more, people are experiencing the climate crisis through water. Water cycle patterns are disrupted meaning rainfall or snowmelt arrives either too early or too late or with too big or too ...

Once you have made the decision to have heart valve replacement surgery, you, along with your surgeon, will need to decide what type of replacement valve is best for you. There are several types of ...

CNET’s expert staff reviews and rates dozens of new products and services each month, building on more than a quarter century of expertise.

As the heart muscle contracts, it propels the blood out into the vascular system. The heart’s chambers and valves are arranged to direct the flow of the blood as the heart beats. The heart has two ...