The Great Courses – The Hidden Power of Microbes – Melissa Booth – TTC

The Great Courses – The Hidden Power of Microbes – Melissa Booth – TTC
English | Tutorial | Size: 8.66 GB


Before the invention of the microscope, the oldest and most widespread forms of life on Earth were totally unknown to humans, even though human life is completely dependent on them. Not only that, but this invisible domain substantially outweighs all animals and humans combined, comprising some one-sixth of the living biomass on Earth.

The Great Courses – The Viking Age – Jennifer Paxton – TTC

The Great Courses – The Viking Age – Jennifer Paxton – TTC
English | Tutorial | Size: 5.59 GB


In AD 793, a band of Scandinavian pirates descended on the British island of Lindisfarne, where they murdered unsuspecting monks and looted lavish monasteries.