Each year, thousands of acres of rainforest are clearcut for cattle grazing. Large amounts of antibiotics and growth hormones are fed to cows, then transmitted when humans eat beef. Methane gas from cows is a source of air pollution that contributes to global warming. Smells like home.
Lets move on now.
Computers emit ozone and create a five-foot wide radius of electro magnetic energy. Both are hazardous to human health.