Human physiology adaptation to altered gravity environments

Human Adaptation to Hot Environments

Human adaptation to arsenic-rich environments.

Adaptation drives genomic changes; however, evidence of specific adaptations in humans remains limited. We found that inhabitants of the northern Argentinean Andes, an arid region where elevated arsenic concentrations in available drinking water is common, have unique arsenic metabolism, with efficient methylation and excretion of the major metabolite dimethylated arsenic and a less excretion o...

Cell proliferation and plant development under novel altered gravity environments.

Gravity is a key factor for life on Earth. It is the only environmental factor that has remained constant throughout evolution, and plants use it to modulate important physiological activities; gravity removal or alteration produces substantial changes in essential functions. For root gravitropism, gravity is sensed in specialised cells, which are capable of detecting magnitudes of the g vector...

Bone Loss and Human Adaptation to Lunar Gravity

Long-duration space _ns and establishment of perrm_nently manned bases on the M¢_m and Mars are currently being planned The u_eightless environment of space aml the lou_gravity _ztqronments of the Moon and Mars pose an unknou_ chaaenge to human habitability and sun_t_bilio'. Of particular concern in the medical research community today is the effect of less than Earth gravi O, on the human skel...

Evolutionary change in human-altered environments.

THOMAS B . SMITH*† and LOUIS BERNATCHEZ‡ *Center for Tropical Research, Institute of the Environment, University of California, Los Angeles, 619 Charles E. Young Dr East, Los Angeles, CA 90095-1496, USA, †Department of Ecology and Evolutionary Biology, University of California, Los Angeles, 621 Charles E. Young Dr South, Los Angeles, CA 90095-1606, USA, ‡Département de Biologie, Pavillon Charle...