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    Paul du Chaillu, Anthropologist  
Paul Belloni du Chaillu was a French-American traveler and anthropologist. He became famous in the 1860s as the first modern outsider to confirm the existence of gorillas, and later the Pygmy people of central Africa. He later researched th...
 
    August Weismann, Evolutionary Biologist  
Friedrich Leopold August Weismann was a German evolutionary biologist. Ernst Mayr ranked him the second most notable evolutionary theorist of the 19th century, after Charles Darwin. Weismann became the Director of the Zoological Institute a...
 
    John Muir, Father of the National Parks  
John Muir was a Scottish-American naturalist, author, and early advocate of preservation of wilderness in the United States. His letters, essays, and books telling of his adventures in nature, especially in the Sierra Nevada mountains of Ca...
 
    Henri Rousseau,  Post-Impressionist Painter  
Henri Rousseau was a French Post-Impressionist painter in the Naïve or Primitive manner. He was also known as Le Douanier (the customs officer), a humorous description of his occupation as a toll collector. Ridiculed during his lifetime, he...
 
    Wickham, Stealing Rubber Seeds  
Sir Henry Alexander Wickham was a British explorer. He later claimed in publicity that he was responsible for stealing about 70,000 seeds from the rubber-bearing tree, Hevea brasiliensis, in the Santarém area of Brazil in 1876. However ther...
 
    D. E. Salmon, Salmonella Bacteria  
Daniel Elmer Salmon was a veterinary surgeon. He earned the first D.V.M. degree awarded in the United States, and spent his career studying animal diseases for the U.S. Department of Agriculture. He gave his name to the Salmonella genus of...
 
    Karl Blossfeldt, German Photographer  
Karl Blossfeldt was a German photographer, sculptor, teacher and artist who worked in Berlin, Germany. He is best known for his close-up photographs of plants. He worked as an apprentice in an artistic form of iron casting at the iron found...
 
    George Washington Carver  
Scientist and early advocate for industrial uses for farm crops (bio-energy). Carver earned a B.S. from the Iowa Agricultural College in 1894 and an M.S. in 1896. He became a member of the faculty of Iowa State College and then Tuskegee Ins...
 
    Gifford Pinchot  
Forrester and conservation advocate. Gifford Pinchot was one of America's leading advocates of environmental conservation at the turn of the twentieth century. He served as the Chief Forester or Teddy Roosevelt's U.S. Forest Service, two-te...
 
    David Fairchild, Botanist and Plant Explorer  
David Grandison Fairchild was an American botanist and plant explorer. Fairchild was responsible for the introduction of more than 200,000 exotic plants and varieties of established crops into the United States, including soybeans, pistachi...
 
    Alice Hamilton  
Physician, reformer, founder of occupational medicine in the U.S. Alice Hamilton was the founder of occupational medicine in the U.S. and the first woman on the faculty of Harvard Medical School. She took a leading role in two major environ...
 
    Yellowstone, First National Park in the World  
Yellowstone National Park is a national park located primarily in the U.S. state of Wyoming, although it also extends into Montana and Idaho. It was established by the U.S. Congress and signed into law by President Ulysses S. Grant on March...
 
    Alfred Wegener, Discovery Plate Tectonics  
Alfred Lothar Wegener was a German polar researcher, geophysicist and meteorologist. During his lifetime he was primarily known for his achievements in meteorology and as a pioneer of polar research, but today he is most remembered as th...
 
    Krakatoa Eruption, Indonesia  
Krakatoa is a volcanic island in the Sunda Strait between Java and Sumatra in Indonesia. It has erupted repeatedly, massively and with disastrous consequences throughout recorded history. The best known eruption culminated in a series of ma...
 
    Charles Richter, Creator Richter Scale  
Charles Francis Richter , was an American seismologist and physicist. Richter is most famous as the creator of the Richter magnitude scale which, until the development of the moment magnitude scale in 1979, quantified the size of earthquake...
 
       
 
         
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