Ways to Avoid Losing Oxygen in a Submarine

In 1940, German U-boat commander Otto Kretschmer's submarine was under siege for hours and his crew grew tremendously stressed. In order to preserve oxygen, they had to find ways to stay calm.

from Videos | Smithsonian http://www.smithsonianmag.com/videos/category/history/ways-to-avoid-losing-oxygen-in-a-submarine/
via IFTTT

Commentaires

Enregistrer un commentaire

Thank you to leave a comment on my site

Posts les plus consultés de ce blog

Kid draws a hilarious family portrait, featuring his mother on her period

Image
Periods are normal, but kids pointing them out in their sketches is something else. Australian woman Penny Rohleder shared a photo of her son's drawing on the Facebook page of blogger Constance Hall on Jul. 25, which well, says it all. SEE ALSO: James Corden tests out gymnastics class for his son and is instantly showed up by children "I don't know whether to be proud or embarrassed that my 5 year old son knows this," Rohleder wrote.  "Julian drew a family portrait. I said 'What's that red bit on me?' And he replied, real casual, 'That's your period.'"  Well, at least he knows. To give further context, Rohleder revealed she had pulmonary embolism in October 2016, and was put on blood thinning treatment which makes her periods "very, very bad," she explained to the Daily Mail . Read more... More about Australia , Parenting , Culture , Motherhood , and Periods from Mashable http://mashable.com/2017/07/31/period-mo
Lire la suite

Chris Froome sends out strong message to his rivals as he storms back to win Criterium du Dauphine for the second time

British rider Chris Froome launched one of his blistering mountain attacks to win the Criterium du Dauphine race for the second time, clinching the eighth stage to take the yellow jersey. from Articles | Mail Online http://www.dailymail.co.uk/sport/othersports/article-3123660/Chris-Froome-sends-strong-message-rivals-storms-win-Criterium-du-Dauphine-second-time.html?ITO=1490&ns_mchannel=rss&ns_campaign=1490
Lire la suite

This Is What Fish Oil Supplements Actually Do

For centuries , humans have used fish oils, orally or topically, to treat a wide array of ailments, from aches and pains to rickets and gout. The popularity of this supplement has shifted over the years, as have its primary uses. But over the past couple of decades, the hype around fish oil has arguably reached an all-time high. According to National Institutes of Health statistics , in 2012, at least 18.8 million Americans used about $1.3 billion dollars worth of fish oil, making it the third most widely used supplement in the nation. (Sales reportedly flattened out at about that level around 2013.) Today, many use it because they believe it will broadly help their heart health , but others hold that fish oil can help with renal health, bone, and joint conditions, cognitive functions and mental wellness, and any number of other conditions. But is fish oil really as good for you as millions of Americans believe it is? Who should be taking it and when? We dove into the research and
Lire la suite