The oldest tree changes its sex

The oldest tree changes its sex

A tree typically has many secondary branches supported clear of the ground by the trunk. This trunk typically contains woody tissue for strength, and vascular tissue to carry materials from one part...
A spoon of Vaseline may prolong our lives

A spoon of Vaseline may prolong our lives

The first known reference to the name Vaseline was by the inventor of petroleum jelly, Robert Chesebrough in his U.S. patent for the process of making petroleum jelly (U.S. Patent 127,568) in 1872....
About pumpkins

About pumpkins

A pumpkin is a cultivar of the squash plant, most commonly of Cucurbita pepo, that is round, with smooth, slightly ribbed skin, and deep yellow to orange coloration. The thick shell contains the...
Butterflies characteristics

Butterflies characteristics

Butterflies have the typical four-stage insect life cycle. Winged adults lay eggs on the food plant on which their larvae, known as caterpillars, will feed. The caterpillars grow, sometimes very...
Butterflies characteristics

Butterflies characteristics

Butterflies have the typical four-stage insect life cycle. Winged adults lay eggs on the food plant on which their larvae, known as caterpillars, will feed. The caterpillars grow, sometimes very...
Dolphins, interesting animals

Dolphins, interesting animals

Dolphins are a widely distributed and diverse group of fully aquatic marine mammals. There are 40 extant species of dolphins. Dolphins, alongside other cetaceans, belong to the clade Cetartiodactyla...
Potassium deficiency symptoms

Potassium deficiency symptoms

      Prepared by – Suzanne Abou Said Daou     If you’re feeling tired, or having cramps in your legs, as well as suffering from palpitations, and...
Painted turtles

Painted turtles

The painted turtle is the most widespread native turtle of North America. It lives in slow-moving fresh waters, from southern Canada to Louisiana and northern Mexico, and from the Atlantic to the...
Publisher: Lebanese Company for Information & Studies

Editor in chief: Hassan Moukalled


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