Editing 1969 in science (section)

==Biology==
* [[Thomas D. Brock]] and Hudson Freeze of Indiana University publish their findings on [[hyperthermophile|hyperthermophilic]] bacteria, most notably ''[[Thermus aquaticus]]'', a [[thermophilic]] [[bacterium]] species living at a temperature of 60-80&nbsp;°C in a [[hot spring]] at [[Yellowstone National Park]].<ref>{{cite journal|last1=Brock|first1=Thomas D.|first2=Hudson|last2=Freeze|title=''Thermus aquaticus'' gen. n. and sp. n., a nonsporulating extreme thermophile|journal=[[Journal of Bacteriology]]|publisher=[[American Society for Microbiology]]|volume=98|issue=1|pages=289–297|date=August 1969|pmid=5781580|pmc=249935|doi=10.1128/jb.98.1.289-297.1969}}</ref> ''T. aquaticus'' (Taq) later becomes a standard source of enzymes able to withstand higher temperatures than those from ''E. Coli'' and is significant in the [[history of polymerase chain reaction]].
* Last [[Przewalski's Horse]] sighted in the wild, in [[Mongolia]].
* Marked decline in [[common whitethroat]]s due to [[Sahel drought]] draws attention to effects of climate on migratory species.