Open Educational Resources

A curated collection of teaching materials

¿Es posible sembrar agua?

¿Es posible sembrar agua?

Description: This video introduces the water sowing technique, which is used by a coffee grower in Antioquia, Colombia to conserve water sources on his farm. A mixture of sea salt, brown sugar and gravel or river stones stimulates water retention and filtration in the...
Ratas en el paraíso 

Ratas en el paraíso 

By Lisette Arévalo Description: This podcast tells the story of how rats, an invasive species, are altering the unique ecosystem of the Galápagos Islands, putting various endemic species at risk. Through interviews, the author presents the ecological consequences and...