Gallery: Posters to inspire the next generation of space explorers

Venus: See you at the Cloud 9 Observatory. The rare science opportunity of planetary transits has long inspired bold voyages to exotic vantage points -- journeys such as James Cook's trek to the South Pacific to watch Venus and Mercury cross the face of the Sun in 1769. Spacecraft now allow us the luxury to study these cosmic crossings at times of our choosing from locales across our solar system. 

A NASA lab released a series of posters Wednesday that Invoke the aesthetics of atomic age tourism posters of the 1950s, while looking toward future space travel.

Photos: Bemidji celebrates water in all its frozen forms

The 19th annual Montebello Niteski night cross country ski race featured a 6K course and a 2K kid's tour. Thirty-seven participants between the ages of 7 and 55 took to the course Friday night. 

Unusually mild temperatures attracted crowds to ski, fish, curl -- and swim -- during Bemidji's Winterfest celebration this past weekend.

Photos: In Duluth, youth league hockey is an outdoor-only sport

Wyatt Zappa, a mite two for the Portman Hockey Club, waits around during a break in action last Friday during the Glen Avon jamboree. Mites are 8-and-under players. 

Duluth has seven independent youth hockey organizations that play at their own volunteer-run neighborhood rinks. One big advantage is that outdoor hockey -- when parents maintain the rinks and the city pays for water and lights -- is largely free.

Photos: The winners and near-winners of Iowa's caucuses

Caucus-goers line up Monday night outside a Democrat Party caucus held at Maple Grove Elementary in West Des Moines, Iowa. The turnout in Iowa was deemed historically large. 

This year's iteration of the Iowa caucuses featured a historically large turnout and a handful of surprising twists.

Photos: Sled dog racers prep for John Beargrease marathon

Ward and Colleen Wallin prep a team of sled dogs for a practice run last week at their Silver Creek Sled Dogs property near Two Harbors, Minn. 

In a time when the number of kennels is decreasing and many mushers are giving up racing, Colleen and Ward Wallin continue to invest in the sport and industry.