deepstash

Beta

How the Tropics Got Their Names

The Major Circles of Latitude

Latitude and longitude are used as addresses for every part of the world. On maps, latitude lines are horizontal, and longitude lines are vertical.

To define boundaries between countries that lack distinctive geographic borders, like mountain ranges or deserts, arcs of latitude are used. There are five significant latitude circles: Arctic Circle, Tropic of Cancer, Equator, Tropic of Capricorn, and Antarctic Circle.

14 SAVES

38 READS

EXPLORE MORE AROUND THESE TOPICS:

SIMILAR ARTICLES & IDEAS:

Vitamin D and sunshine

Vitamin D is essential for calcium absorption and many other biological processes. Lower levels of Vitamin D increase the rates of almost every disease like cancer, diabetes, osteoporosis, cognitiv...

Vitamin D supplementation

Getting vitamin D through supplementation shows zero benefits. A study over a period of 5 years found supplementing with Vitamin D had no impact on cancer, heart disease, or stroke.

A number of researchers now argue that people with high vitamin D levels are healthy not because of the vitamin, but because they get plenty of exposure to the sun. Vitamin D is just a marker of that fact.

Sunlight is good for you

A dermatologist discovered our skin uses sunlight to make nitric oxide, a molecule in the body that dilates blood vessels and lowers blood pressure.

He exposed volunteers to the equivalent of 30 minutes of summer sunlight without sunscreen. The result? The nitric oxide levels in the volunteers went up, and their blood pressure lowered. Because of the connection of high blood pressure to heart disease and strokes, this discovery can prevent millions of deaths globally.

Special powers attributed to gems
Special powers attributed to gems

Many legends from different cultures share the idea that jewels are of divine or superhuman origin.

  • The Amythyst was said to have been created from the tears of the ...
Exploitation of jewels

The power of jewels has been exploited by diplomats, traders, and lovers. The famous marketing slogan of De Beers is 'a diamond is forever' and creates the idea that all engagement rings must have a diamond.

However, a big sparkly diamond is not what makes jewellery so unique. People desire to have something more individual and affordable.

Neolithic Jericho
Neolithic Jericho

It is known by some as the world’s oldest city, settled in 9000 BCE. The city and its surrounding areas are believed to be the first places in the world where humans evolved from their hunter-gathe...

Settlement of Early Hunter-Gatherers

It is estimated that the early hunter-gatherers, called ‘Natufians’ settled gradually in this oasis of a city, domesticating dogs and other animals on the way.

Agriculture and farming would have been mostly trial and error, with them noticing the scattered seeds producing edible plants. The ancient figs would probably be the first cultivated crop.

Fermenting Cereals

Some archaeological evidence shows that the Natufians enjoyed alcoholic beverages like beer by fermenting cereals, serving as an initial motivation to farm.

This may have led to advanced agriculture in the ancient civilization, with grains and cereals remaining a better choice due to its ability to be stored, unlike the forage for wild animals and fruits.