Over the last decade, online education has grown significantly, especially for adult learners who want to earn a degree or certificate while working full-time. The National Center for Education Statistics (NCES) reported 6.6 million students enrolled in distance education courses at postsecondary institutions during the fall of 2017. Within the last few years, high schools have also started exploring ways …

Vast as a sea and deep as an ocean trench, Russia’s Lake Baikal is one of the world’s great natural wonders. With a surface area bigger than Belgium, it contains nearly one quarter of all the world’s freshwater, which is more than the five American Great Lakes combined. Baikal is truly a lake of superlatives. The Earth’s deepest inland body …