Latin America and Caribbean

Numeral system of a world culture

Consider: Arabic, Babylonian, Chinese, Egyptian, Greek, Indian, Mayan, Andean Quipu, Roman, Sumerian, Yoruba, etc.

Zero

Ecosystem concept

Vaccination

Species concept

Mary Agnes Chase, feminist and botanist

Ynes Mexia, plant explorer

Mexia found her calling late in life, but her contributions to botany are impressive...

Carlos Finlay and the Yellow Fever vector

Cuban Doctor Carlos Finlay successfully identified mosquitos as the vector for the transmission of deadly Yellow Fever...

Maria Sibylla Merian and butterfly metamorphosis

Although long portrayed as merely an illustrator, Merian’s close observation of the ecology and life cycles of insects influenced later naturalists...