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these urinals turn pee into fertilizer for local food
clean tech
pee power
phosphorus
recycling
science
sewage
source
the official atomic weights of 19 elements have just been changed
aluminium
arsenic
atomic weights
beryllium
caesium
chemistry
cobalt
fluorine
gold
holmium
iupac
manganese
niobium
phosphorus
praseodymium
scandium
science
science fiction
thulium
usgs
yttrium
source
see the explosion that mimics the strike of a match
chemistry
experiments
matches
phosphorus
potassium chlorate
red phosphorus
science
science fiction
source
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