While it sounds weird, milky sap from organic rubber trees actually turns into an incredibly springy, durable and shockingly comfortable material. This is the Earthfoam mattress.

The masons, who are direct descendants of the ancient Maya, said that they commonly use extracts from plants and particularly sap from the Chucúm and Jiote (Chaká) trees in their lime mix.

If you have a latex allergy, you may also have a reaction to certain foods that contain proteins similar to those in rubber tree sap, so it’s important to pay attention if you notice symptoms of ...

And the main ingredient of Melofoam, which makes up 97% of the material, is rubber tree sap that is collected in coconut shells and then gently steamed until it becomes solid.

Now 21 years old, Bendek is the CEO of a company called Elastic Energy, which takes that rubber tree sap and makes an elastic band into the main fuel source for the battery, which weighs about 200 ...