The idea is to down-regulate the production of protein(s) that induce cellular senescence in chronic wounds, for example. The short interfering RNA molecules are fragile. The article is touting a potentially more effective delivery system (gun), rather than a particular fragment (bullet).

A break from weekend or late-night on-call duties if they volunteer? Sounds like an great way to demoralize the (fewer) remaining workers who must share the (unchanged) burden.

Futureworld.

And two such sheets will self-assemble into a lipid bilayer.

You may prefer the rocks in nearby Afghanistan.

Yes, it works well, and an implementation has been part of the ubiquitous GNU compiler collection for several revisions: gcc.gnu

"Always two there are, no more, no less: a master and an apprentice."—Yoda

I see "To promote the Progress of Science and useful Arts, by securing for limited Times to Authors and Inventors the exclusive Right to their respective Writings and Discoveries" in the US Constitution. I don't see "compensation for each individual's enjoyment of each work." Mr. Bronfman is neither an Author nor an Inventor, and I can assure him that I do not enjoy any of his music.

Based on bromine, a dark, red, fuming, toxic liquid with a choking, irritating smell; from the Greek meaning stench. I'll take two, please.

"the mayor repeatedly emphasized ... the need for students to pay their 'fair share.'"

The students repeatedly emphasized the need for profligate politicians to control their spending.

"proud owner of a bank account brimming with money"?

You're more likely to wake up as the proud owner of a pile of IOUs. The politicians and their loyal voters have already spent the future.

Even Sir Isaac Newton fell for the South Sea Bubble of 1719, not once but twice!

You may have misread the title: this is the Alex Trebek game show category, with alien technology inside.

You might enjoy this Kinetic Model of elastic collisions.