New technique developed by PNNL successfully joins thicker aluminum alloys to steel

When it comes to the special sauce of batteries, PNNL researchers say it's all about the salt concentration.

Imagine a hollow tube thousands of times smaller than a human hair. Now envision filthy water flowing through an array of such tubes, each designed to capture contaminants on the inside, with clean water emerging at the other end.

A mix of factors is contributing to an increasing mortality rate of trees in the moist tropics, where trees are dying at about twice the rate they were 35 years ago.