A new study finds Asian carp may be able to survive off a wider variety of food sources than previously anticipated. Plankton are the preferred food of silver and bighead Asian carp, two of the four main Asian carp species threatening to invade the Great Lakes. It’s a food source in decline in their current breeding areas.
Algae pollution, plastic pollution and waste run-off plague the Great Lakes here in the United States. But similar problems also threaten large bodies of freshwater worldwide. The seven African Great Lakes and Lake Baikal in Russia, two of the world’s largest systems of freshwater, also face these problems daily.
July 29 marked this year’s Earth Overshoot Day. That’s the annual date where it’s estimated that humans have taken more resources from the planet than it can produce for that year. The calculations for the date are provided by the Global Footprint Network, with the date changing almost every year.