Portable water filtration systems have generally been constrained by their ability to eliminate only bacteria and Cryptosporidium (a microscopic, diarrhea-causing parasite), but not viruses. Purification systems get rid of viruses, but take longer to do so. The MSR Guardian is different – it acts as both filter and purifier and is claimed to eliminate all biological threats you might find in even the dirtiest of water.
For people in developing nations or rural locations, getting clean water may soon be as simple as opening a book … and ripping a page out. That’s the idea behind The Drinkable Book, developed by Carnegie Mellon University postdoc Theresa Dankovich. Each of its pages is made from a thick sheet of paper impregnated with silver and copper nanoparticles, that kill 99.9 percent of microbes in tainted water that’s filtered through it.
Do you get itchy, cramped-up or wheezy from even a little bit of wine?
It could be because you have a sulfite sensitivity. Sulfites are
sulfur-based compounds that are added in the wine-making process to
prevent bacterial growth – they keep the wine from spoiling while it's
in transit and storage. Given that they're not needed once the wine has
been poured, however, chemist James Kornacki has developed a device for
reducing them at that point in the game – it's called the Üllo.
While a smoke detector can certainly provide you with an early warning
in the event of a house fire, it can't usually do much to help you get
out of the building once that fire is underway. That's why Toronto-based
startup Safety iQ developed the Saver. It's a portable device that
reportedly allows users to breathe safely in smoke-filled environments,
while also serving as a flashlight and alarm.