Scientists have long struggled to understand what regulates sperm “capacitation,” the vital physiological process sperm must undergo to become capable of fertilizing an egg cell. Zinc plays a critical role.
There's a mysterious and sometimes deadly weather pattern in which the jet stream stalls out over a region. A University of Chicago study explains the blocking phenomenon that has baffled forecasters until now.
Despite a wild fall, National Oceanic and Atmospheric Administration (NOAA) expects a warmer-than-normal winter for the western two-thirds of the U.S. They don’t expect any areas with cooler-than-normal conditions.
It is important for youth involved in fair exhibitions to understand how to protect the health of their animals, safeguard their personal health, and educate the public on how to interact with animals in a safe manner.