Calculating the total mass of the universe is not simple, because most of the mass is invisible. In a pie chart of the contents of the universe, only 5 percent is normal matter, atoms that make up all ...

Aerobic and resistance exercise can significantly improve physical performance in patients living with metastatic breast ...

Chemical companies are increasingly looking to the mass-balance concept as a method of offering chemicals made from renewable raw materials. It’s a low-cost, low-risk way to get into the renewables ...

A green accounting method called “mass balance” certifies that something was manufactured with recycled plastic — just not necessarily much of the bottle making the claim. By Julie Creswell and Hiroko ...

ProPublica is a nonprofit newsroom that investigates abuses of power. Sign up to receive our biggest stories as soon as they’re published. The Environmental Protection Agency has taken the first ever ...

We obviously can’t put the universe on a giant set of scales, but scientists have found astonishingly clever ways to figure out how much it “weighs.” It’s a mix of observation, maths, and cosmic ...