'Receive' sounds
Crosshair cursor
Visible pyramid, half finished
Show males in Venus population pyramid
Hide pyramid numbers by default
Show underage in other color
Bars with less alpha
Add Population.getUnderagePopulation
Tweaks
If no mothers available, create no baby (commented out)
Remove baby probability
Add story in readme
Show baby pods
Better story?
Kill of an absolute number of people each tick too
Fewer bebies per sperm