The Great American Eclipse: On April 8, a total solar eclipse will traverse the U.S. from Texas to Maine, casting a spring afternoon into darkness for up to 4 mins 28 secs. Secure accommodations in cities along the path.
Extra-dramatic northern lights: A solar maximum, or time of enhanced activity on the sun's surface, is expected to cause the dancing greens and purples of the northern lights to be at their most intense in two decades, according to experts.
Sandhill crane migration: Each March, over half a million sandhill cranes grace Nebraska's Platte River on a unique migration. The Rowe Sanctuary in Gibbon, Nebraska, provides guided tours, showcasing the elegant silhouettes of cranes against the orange-pink skies.
Bluebell blooms: One of the most spectacular and fleeting natural events of the year occurs in Britain's forests in the middle of spring: the bluebell bloom.
Eternal Flame Falls: One very picturesque aspect of this little, picturesque waterfall in Western New York is the grotto, which is illuminated by a flashing orange flame.
Morning Glory clouds: Between September and November, one of the rarest and most amazing cloud formations in the world may be viewed over Australia's Gulf of Carpentaria.
The Moskstraumen whirlpools: Every summer, a beast comes up out of the ocean in the southernmost point of the Lofoten archipelago in Norway.