Month: July 2019

Zambia Heroes Day

In 1964, Zambia won its freedom from England and became an independent nation. Those who fought in that freedom struggle are honored each year on Heroes Day. The somber day is a public holiday and all Zambians take the day off work. In 1974, then-president Dr. Kenneth Kaunda presented a gift to the nation to honor its heroes: a statue of a man with no shirt or shoes and defiantly raising a chained hand into the air. Erected in the capital city of Lusaka, the one-and-a-half-ton bronze statue has become the rallying point for any holiday, march, or remembrance in which freedom plays a role. Discuss

Source: The Free Dictionary

Neurogenesis

The human nervous system is composed of some 200 billion cells called neurons, about half of which are found in the brain. Neurogenesis, the process through which neurons are formed, is most active during prenatal development. Though early neuroanatomists believed that the adult nervous system is fixed and incapable of regeneration, neurogenesis actually continues throughout life. Studies have shown that lack of sleep reduces neurogenesis and exercise increases it. How is it affected by stress? Discuss

Source: The Free Dictionary