Darwin officially published his theories in On the Origin of the Species in 1859. He knew his views would be controversial, especially with those who believed heavily in religion. His first edition of the book did not talk much about human evolution, but did hypothesize that there was a common ancestor for all life.
DONT EAT TUNA WHILE YOU'RE PREGNANT. Tuna are the big fish of the sea and because of this they end up having much more mercury in their meat. You don't want to hurt your unborn child for something as silly as enjoying a sandwich.ONT EAT TUNA WHILE YOU'RE PREGNANT. Tuna are the big fish of the sea and because of this they end up having much more mercury in their meat. You don't want to hurt your unborn child for something as silly as enjoying a sandwich.
1 Smoked salmon is considered safe to eat in pregnancy, as the curing process destroys listeria bacteria. 2  However, if it hasn't been completely cured or frozen before you eat it, listeria bacteria may remain. 3  So if you choose to eat smoked salmon, make sure it is from a trusted source, such as a supermarket. So limit how much you eat of these fish to two portions a week. 2  Don't eat shark, swordfish and marlin, as these fish contain unsafe levels of mercury. 3  Tuna contains some mercury, too, so don't eat more than four medium-sized cans, or two fresh tuna steaks, a week. 4  Limit your caffeine intake to 200mg a day.