In liquid-bearing concrete structures, joints are where protective linings fail first. A monolithic film is asked to span a moving gap and stay bonded to both sides through thermal swings, settlement, ...

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Rachel Feltman: For Scientific American’s Science Quickly, I’m Rachel Feltman. The World Health Organization estimates that infertility impacts one in six adults globally. But when it comes to ...

Republican Tim Sheehy has defeated Democratic Sen. Jon Tester in Montana, NBC News projects, deepening the GOP’s projected Senate majority after the party's wins in West Virginia and Ohio. Sheehy, a ...

Sen. Jon Tester, D-Mont., lost he re-election bid to Republican Tim Sheehy. (Sarah Silbiger/Getty Images) Montana Sen. Jon Tester, a key voice for Democrats on veterans and military spending issues, ...

Democrats are growing more confident about the prospect of Montana Senator Jon Tester's reelection. Support for Tester appears to have bounced in recent weeks amid growing controversy over the origins ...

Senator Jon Tester trails Republican challenger Tim Sheehy in Montana's U.S. Senate race, a contest that could determine control of the chamber, according to a new poll released Sunday. Tester, a ...

Democrats are refusing to give up on Sen. Jon Tester’s (D-Mont.) reelection bid even as his chances appear bleak with just more than two weeks until Election Day. To GOP senators and operatives, the ...

The central clash in the pivotal Senate race in Montana — and the fight for control of the Senate itself — was on full display Monday night as Democratic Sen. Jon Tester and Republican Tim Sheehy ...

Control of the Senate could turn on Montana. Good evening! Tonight, my colleague Mike Baker, who covers the West, has a dispatch from the state that might have the country’s most important Senate race ...