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How much caffeine is too much per day?

Coffee is one of the most popular beverages in the world and it is made by brewing ground coffee beans with hot water. After petroleum, coffee is the most traded commodity in the world. In this article, we will delve deeper into the stimulating effect (due to “caffeine”) of coffee and health benefits tied with coffee consumption. Going forward, we discuss more on general daily caffeine limit for a person, and more related interesting facts of caffeine.

How can Pine trees survive in the winter?

The shape of pine trees increases the light used by the needle-shaped or scale-shaped leaves for photosynthesis. In snowy weather the triangle shape of conifers acts like the slope of a roof, allowing gravity to pull snow off the branches. Furthermore, the sugars in pine tree sap are concentrated in winter to further protect the living cells from damage.

Days After Dinosaurs Age

Dinosaurs endured the worst day of their lives 66 million years ago. A 12 kilometer-wide (7.5 miles) asteroid collided with Earth near the Yucatán peninsula in Mexico. The hit generated an explosion several billion times more powerful than the Hiroshima atomic bomb. On the American continent, the majority of animals are slaughtered right away. Tsunamis […]

How can fungi cause health problems?

Fungi cause human illnesses in three different ways: poisonings, parasitic infections, and allergic reactions. Some fungi produce toxic chemicals to protect themselves from parasites and predators. In small amounts, mold spores are harmless, but when they land on a damp spot somewhere in the house, they can start to grow and make house habitats.

Why do we need to sleep?

During sleep, our body goes through four sleeping stages. This cycle occurs multiple times throughout the time in different lengths. The cycle includes two major phases:

1. Non-rapid eye movement (non-REM) sleep.
2. Rapid eye movement (REM) sleep.

Old People smell

The specific chemical compound called 2-nonenal gives old smell , which created by the oxidative breakdown of another complex compound overtime. According to researchers, this 2-Nonenal compound tends to increase with aging, and form more unpleasant greasy odor.