Alfred Russel Wallace
Alfred Russel Wallace OM , FRS (8 January 1823 – 7 November 1913 ) was a British naturalist , explorer , geographer , anthropologist and biologist .
He did extensive fieldwork first in the Amazon River basin, and then in the Malay Archipelago , where he identifie more
Shen Kuo
Shen Kuo or Shen Kua () (1031 –1095 ) was a polymathic Chinese scientist and statesman of the Song Dynasty (960–1279). Excelling in many fields of study and statecraft, he was a mathematician , astronomer , meteorologist , geologist , zoologist , botanist , pharmacologist more
DNA
Deoxyribonucleic acid (DNA) is a nucleic acid that contains the genetic instructions used in the development and functioning of all known living organisms . The main role of DNA molecule s is the long-term storage of information . DNA is often compared to a set of blueprints, since it cont more
Chagas disease
Chagas' disease (also called American trypanosomiasis) is a human tropical parasitic disease which occurs in the Americas , particularly in South America . Its pathogen ic agent is a flagellate protozoa n named Trypanosoma cruzi , which is transmitted to humans and other mammal more
Saffron
Saffron () is a spice derived from the flower of the saffron crocus (Crocus sativus), a species of crocus in the family Iridaceae . The flower has three stigma s, which are the distal ends of the plant's carpel s. Together with its style, the stalk connecting the stigmas to the rest of more