|
|
In 1886, William Bates reported on the discovery of a substance produced by the adrenal gland that turned out to be epinephrine (adrenaline). In 1904, this drug was first artificially synthesized by Friedrich Stolz.
Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
There are 20 feet of blood vessels in each square inch of human skin.
As many as 28% of hospitalized patients requiring mechanical ventilators to help them breathe (for more than 48 hours) will develop ventilator-associated pneumonia. Current therapy involves intravenous antibiotics, but new antibiotics that can be inhaled (and more directly treat the infection) are being developed.
Long-term mental and physical effects from substance abuse include: paranoia, psychosis, immune deficiencies, and organ damage.
![(a) Mean duration (days) and (b) average maximum depth (mm) of snow cover throughout northern latitu](https://biology-forums.com/gallery/47/medium_33_08_09_11_10_42_11_1675758.jpeg)
![Tai chi stance with front foot pointing straight ahead and back foot at 45° angle, heels in line, ...](https://biology-forums.com/gallery/32/medium_380798_21_08_17_1_23_11_327282410.jpeg)