Scientists just found a 15-million-year-old climate time capsule in giant eggshells from Namibia, and the oxygen inside suggests plants may have been far less active at pulling ...

University researchers discover ancient bird eggshells in Namibia hold key insights into plant CO₂ absorption levels during warmer periods, raising concerns about nature's ability to mitigate climate ...
BMJ

Cardiopulmonary capacity and muscle strength in transgender women on long-term gender-affirming hormone therapy: a cross-sectional study

Correspondence to Professor Leonardo Azevedo Mobilia Alvares, Unidade de Endocrinologia do Desenvolvimento, Universidade de São Paulo Hospital das Clínicas, Sao Paulo, 05403-000, Brazil; leo_a_alvares ...
Nature

Plio-Pleistocene climate sensitivity evaluated using high-resolution CO

A new record of Pliocene carbon dioxide variations derived from boron isotopes shows that climate sensitivity (the change in global mean temperature in response to radiative forcing) during the ...
ahajournals.org

Effect of Altitude on the Heart and the Lungs

This review focuses on the effects of altitude exposure from 1 to several days or weeks as occurs in tourists, trekkers, and mountaineers who visit high altitude and normally reside near sea level. We ...