Ancient DNA may shed some light on how past environments impacted ancient human populations.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/ancient-dna-may-reveal-how-environment-impacted-past-human-populations
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/science-world-report
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/science-and-technology
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/environment
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/history
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/research