Kevlar is a synthetic fabric used in bullet-proof vests. The repeating ring-like structures of the polymer in Kevlar are perfectly aligned and connected with each other inside each fiber. Then the ...

Mr. Hawkins, in his Transactions of the Horticultural Society, gives an account of the most remarkable instance on record of the flowering of the American ... A needle and thread is also furnished ...

The thread size is measured and based on the inside of the pipe or tube. Standard thread size standards include NPT (National Pipe Thread ... excellent overview on pipe thread sizing. Below is a chart ...

Adjust the colors to reduce glare and give your eyes a break. Use one of the services below to sign in to PBS: You've just tried to add this video to My List. But first, we need you to sign in to ...

Some physical alterations can be performed without pain relief. Overview: The standards (set by the non-profit American Humane Association) address some of the expectations consumers have for a ...

Chart: The Economist What accounts for the boom? In part it continues a long-running phenomenon. In the 20th century American equities produced a real dollar return of 7% per year, versus 4.9% in ...

What's in a name? For Kamala Harris, it's a way to assert her own authority, implicitly celebrate her identity -- and blunt attacks by her White House rival, Donald Trump. The former Republican ...

The event will include live music and a gift with purchase. Next door, American Threads opened an 1,800-square-foot store next to Starbucks. The store sells California-inspired clothing and ...

As for the pronunciation, the 60-year-old vice president's two great-nieces took to the stage at the Democratic National Convention ... that has been used often by American politicians to create ...