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Humans can smell chlorine gas at ranges from 0.1–0.3 ppm. According to a review from 2010: "At 1–3 ppm, there is mild mucous membrane irritation that can usually be tolerated for about an hour. At 5–15 ppm, there is moderate mucous membrane irritation. At 30 ppm and beyond, there is immediate chest pain, shortness of breath, and cough.
It is used to disinfect water as well as being a part of the sanitation process for sewage and industrial waste. Chlorine is also used as a bleaching agent during the production of paper and cloth. Many household cleaning products, including bleach, contain chlorine. Given the volume and ease of chlorine for industrial and commercial use ...
Bleach is the generic name for any chemical product that is used industrially or domestically to remove color from (i.e. to whiten) fabric or fiber (in a process called bleaching) or to disinfect after cleaning.
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Space traveler's eyesight can become blurry after too much time in space. [ 86 ] [ 87 ] Another effect is known as cosmic ray visual phenomena . [a] NASA survey of 300 male and female astronauts, about 23 percent of short-flight and 49 percent of long-flight astronauts said they had experienced problems with both near and distance vision during ...
The pioneering astronauts of the Polaris Dawn mission have a packed agenda during their five short days in space, but medical officer Anna Menon still found time to read to her children from orbit ...
The European Space Foundation report cites many advantages of a Mars sample-return. In particular, it would permit extensive analyses on Earth, without the size and weight constraints for instruments sent to Mars on rovers.
Space heaters also have a hidden hazard: They can cause overheating — aka hyperthermia — especially in kids, people with disabilities and older adults who may have difficulty leaving a room ...