What's more, according to their analysis of modern human DNA, one of these isolated populations left a stronger legacy in our genes than the other. "The question of where we come from is one that has ...

Microgravity affects various aspects of the human body. According to NASA, microgravity leads to changes in fluid distribution, muscle loading, and altered signalling pathways. Some basic changes ...

The human heart, brain and circulatory system are also affected due to a prolonged stay in space. In microgravity, fluids from the rest of the body tend to shift upward toward the head.

(NewsNation) — Butch Wilmore and Suni Williams, as well as two other NASA astronauts, have left the International Space Station after being stuck for nine months after a Boeing test flight. The return ...

However, the human body evolved to function in the gravity ... Microgravity also distorts the vestibular system, which is how you balance and sense which way is up. In space, there is no up ...

Spending months in microgravity is brutal on the body. Without the Earth’s gravitational pull, muscles shrink, bones weaken and bodily fluids shift. Astronauts lose muscle mass rapidly because ...

These dangers will only grow as humanity pushes deeper into the solar system, including to Mars, demanding innovative solutions to safeguard the future of space exploration. Despite the attention ...

For the last two decades, the prevailing view in human evolutionary genetics has been that Homo sapiens first appeared in Africa around 200,000 to 300,000 years ago, and descended from a single ...

Some of the genes from Population B, "particularly those related to brain function and neural processing, may have played a crucial role in human evolution," study co-author Trevor Cousins, a ...

but gravity is an important factor in human health and, without it, body systems work differently. Humans have a vestibular system in our inner ear which helps to keep us balanced. In the low ...

Body fluids and circulation: Composition of blood, blood groups, coagulation of blood; Composition of lymph and its function; Human circulatory system-Structure of human heart and blood vessels ...