4 ms·
US used to maintain bat houses so they kill insects and drop guano. Wars were fought for guano caves. Then synthetic nitrates (Haber process) happened and the b
by aitchnyu 2y ago
US used to maintain bat houses so they kill insects and drop guano. Wars were fought for guano caves. Then synthetic nitrates (Haber process) happened and the bottleneck keeping population below 1 billion went away.