'We thought we'd got the numbers wrong': Holloman Lake is a birder's paradise - and has the highest levels of 'forever chemicals' on record

The lake was a haven for wildlife and seemed an ideal campsite. But strange foam around the shoreline turned out to be more than just an oddity - and reveals the alarming way forever chemicals move through ecosystemsFor years, Christopher Witt took birdwatchers to Holloman Lake in the Chihuahuan desert off the route 70 highway in New Mexico. By mid-morning the sun would beat down as they huddled in the scant shade of the van. There were no trees other than a collection of salt cedars on the lake's north shore. But the discomfort didn't matter when the peregrine falcons appeared, slicing through the sky. "It was hard to leave that place," says Witt.The lake - created in 1965 as part of a system of wastewater catchment ponds for Holloman air force base - is an unlikely oasis. Other than small ponds created for livestock it is the only body of water for thousands of square kilometres in an otherwise stark landscape. However, Witt says there was always something slightly weird about the foam that would form around the edge. "But I only saw that stuff once I knew." Continue reading...