Jane Goodall, 76, the world-famous primatologist marked her presence at Science World, in order to celebrate the 50th-anniversary of her pioneered work, which she has done for the primates and changing the age-old notions held by scientists for them.

For 300 days a year, she keeps travelling, so as to spread awareness regarding the plight of chimpanzees. She started studying chimpanzees fifty years ago in Gombe, Tanzania.

Science World was attended by students from kindergarten to high school. She told them that there were 1.5 million chimps in Africa in 1960 and today, their population has slipped to below 300,000. This is so, as their natural habitat is being interfered for commercial purposes and violated activities.

She added that her fervor for campaigning for chimpanzees born when at a conference in 1986 she saw images relating to devastated chimp habitats, their hunting for food and selling of orphans in markets.

The Jane Goodall Institute was originated by her to save the population of chimpanzees in Africa. It runs an education program, Roots & Shoots that incorporates 8,000 groups worldwide that encourage environmental activities.

She said, "Remember that every day you live you are making a difference and impact in the world. It just has to be something you care very much about".