Blue hydrogen has been pushed by the natural gas industry as a clean energy alternative that could take advantage of the U.S.’ ample gas reserves and use the existing infrastructure, such as ...

The cold blue water will immediately fall into the hot yellow water causing mixing. The water will quickly become green throughout. Ask students: Why do you think the hot and cold water mixed when the ...

The first time, the cold, blue water sank into the red, warm water. We saw purple water through both glasses. This is because the cold water was more dense than the warm.

Add 1 drop of blue food coloring to the cold water and gently mix. Ask your adult partner to add two tablespoons of hot tap water to a separate cup. Add 1 drop of red food coloring to the hot water ...

Cold water swimming is in now, which is somewhat embarrassing for anyone who does it.People gush over the ponds at Hampstead Heath in winter, there’s the Octopus Guy and President-elect Joe ...