When sea ice melts, polar bears must move onto land for several months without access to food. This fasting period is challenging for all bears, but particularly for polar bear mothers who are nursing cubs.
Inside a shed in the northern Indian state of Haryana, the sound of flutes floated softly from loudspeakers. The audience, grazing silently, was dozens of cows, the unwitting subjects of an experiment in music therapy.
"Cow's milk without cows" will be in Israeli shops by 2023, after a start-up raised a record $13m (£9.7m) in seed funding from investors to help it make traditional dairy products from microorganisms.
Oatly, maker of dairy alternatives, could be worth $10 billion when it lists on the stock market this week. The share sale is a barometer of changing consumer preferences.
