NASA scientists are flying over Alaska and Canada, measuring the elevation of rivers and lakes. Original from NASA.… https://www.rawpixel.com/image/440080/river-drone-shotFree Image from public domain licenseBeautiful scenic Himalayas covered in snow https://www.rawpixel.com/image/532102/premium-photo-image-mountain-glacier-pakistanView licenseBeautiful scenic Himalayas covered in snow https://www.rawpixel.com/image/532188/premium-photo-image-black-rocks-permafrost-adventureView licenseSandia technologist Jenna Schambach works with a sample of Alaska lakebed soil.By studying the microbes in the soil, and the… https://www.rawpixel.com/image/11072991/photo-image-person-public-domain-womanFree Image from public domain licenseClose up of a mountain covered in snow https://www.rawpixel.com/image/532115/premium-photo-image-permafrost-pakistan-mountain-textureView license