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Plastic food packaging: simply awful, or is it more complicated?

February 1, 2022 | Issue 56

Why is food sold in packaging? Do we really need it? And if so, what materials are best? These questions are more complex than they seem and the answers may surprise you.

Ages: 11-14, 14-16, 16-19; Keywords: Carbon footprint, Food waste, Plastics, Sustainability


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Understand Europe at night from space. Click on the image to see the full map.
NASA Earth Observatory images by Joshua Stevens, using Suomi NPP VIIRS data from Miguel Román, NASA’s Goddard Space Flight Center, Public domain

Too much of a good thing – the problem of light pollution

February 1, 2022 | Issue 56

Blinded by the light: We rely on lights to see in the dark, but did you know that light pollution has serious environmental consequences?

Ages: 11-14, 14-16, 16-19; Keywords: Biodiversity, Ecology, Environment, Pollution, Sustainable cities


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Teach Materials for Activity 2: Investigating redox chemistry with destaining agents

Household chemistry: solvents and stain removers

February 1, 2022 | Issue 56

Clearing up chemistry: household products like nail polish remover and laundry detergent can be used to demonstrate chemical concepts like intermolecular forces and redox reactions.

Ages: 11-14, 14-16, 16-19; Keywords: Chemical reactions, Redox reactions, Molecular forces, Solvents


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