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Sea ice kept oxygen from reaching deep ocean during last ice age, study finds Sea ice is like a closed window for the ocean More at https://www.nsf.gov/discoveries/disc_summ.jsp?cntn_id=302191&WT.mc_id=USNSF_1 This is a Research News item. Read more at nsf.gov

World's oldest DNA reveals how ice age mammoths evolved Discovery of new lineage, insights into when and how fast mammoths adapted to cold climate More at https://www.nsf.gov/discoveries/disc_summ.jsp?cntn_id=302190&WT.mc_id=USNSF_1 This is a Research News item. Read more at nsf.gov

By Michael D. Shear from NYT U.S. https://ift.tt/3dJnhE3

By Roni Caryn Rabin from NYT Health https://ift.tt/3pSfbeo

By Gretchen Reynolds from NYT Well https://ift.tt/37Jtmwb

By Michael Powell from NYT U.S. https://ift.tt/3r476EQ

By Michael D. Shear from NYT U.S. https://ift.tt/3kjZdZA