See where NASA Mars helicopter flew during its 10.5 mile (16.7 km) Jezero Crater trek. Credit: NASA/JPL-Caltech Greenland votes amid Trump invitation to join US: What to know US Military's Largest ...

Try trekking and snorkeling if you are an adventure lover. Enjoying trekking with strangers who have similar interests would be a thrilling experience. Meanwhile, snorkeling reveals the fabulous world ...