Polluter pays—promoting best practice among plastic producers

I've moved around quite a lot, and one thing that's always really difficult to get my head round when I move to a new place is what I can and can't put in my recycling bin. In one place, plastic had to be put out separately; ...

What Earth's gravity reveals about climate change

On March 17, 2002, the German-U.S. satellite duo GRACE (Gravity Recovery and Climate Experiment) was launched to map the global gravitational field with unprecedented precision. The mission lasted 15 years, more than three ...