Power of solar
Solar powered lights are pictured along the Hoernli ridge on the Matterhorn in Zermatt, Switzerland, July 13, 2015. REUTERS/Denis Balibouse
A model poses on a solar "lazy sun bed" for luxury boats during the Monaco Yacht show, September 22, 2010. REUTERS/Eric Gaillard
The International Space Station is seen with its full complement of solar arrays from the Space Shuttle Discovery during the STS-119 mission against the backdrop of the blackness of space and the Earth's horizon, in this image released by NASA March...more
Matoula Kastrioti, 46, who suffers from multiple sclerosis, sits on a "Seatrac", a solar-powered device that allows people with kinetic disabilities to enter and get out of the sea autonomously, at a beach in Alepochori, west of Athens July 12, 2013....more
A laborer checks the solar panel of a street light at a newly constructed solar housing complex in the eastern Indian city of Kolkata July 8, 2008. The buildings are integrated with photovoltaic technology and the complex is constructed by West...more
A woman boils water in a kettle using solar energy panels at a village of Pengyang county, Ningxia Hui Autonomous Region, December 4, 2007. REUTERS/Stringer
A solar-powered light panel is seen inside a provisional camp for earthquake victims while people sell electronic products in Port-au-Prince September 30, 2010. REUTERS/Eduardo Munoz
Surinamese native Georgette Adipi of the women's organization Maipafolo works with her solar-powered sewing machine in the Maroon village of Nieuw Aurora, whose inhabitants are descendants of slaves, along the upper Suriname River in district...more
El Alto public university students stand next to prototype of a solar car in El Alto, Bolivia, April 23, 2015. REUTERS/David Mercado
A tower at Abengoa solar plant at "Solucar" solar park is seen in Sanlucar la Mayor, near the Andalusian capital of Seville, Spain, November 17, 2014. REUTERS/Marcelo del Pozo
The Solar Impulse 2 airplane, piloted by Andre Borschberg, prepares to land at Kalaeloa airport after flying non-stop from Nagoya, Japan in Kapolei, Hawaii, July 3, 2015. The aircraft, powered only by the sun's energy and piloted alternatively by...more
A model wears a jacket with an integrated solar module in Buenos Aires, Argentina, October 1, 2008. The module converts sunlight into electric power that can be used to charge cell phones, iPods, digital cameras and rechargeable batteries. The jacket...more
Solar panels generate carbon-free electricity for Austin City Hall in Texas December 15, 2010. REUTERS/Chris Baltimore
The Turanor PlanetSolar, the world's largest solar-powered boat, travels on the Seine river next to the Eiffel tower in Paris September 10, 2013. REUTERS/Charles Platiau
A man looks at the world's first energy powered wheel for bicycles during the 'Intersolar' Europe trade fair in Munich June 13, 2012. The front wheel called 'Roola' is developed by proEco, powers at 250 watt and travels up to 65 km (40 miles)....more
FH Bochum Solar Car Team from Germany, drives their solar car SolarWorld 1 across the Canadian prairies in the North American Solar Car Challenge near Medicine Hat, July 22, 2008. REUTERS/Todd Korol
A general view shows solar panels to produce renewable energy at the photovoltaic park in Les Mees, in the department of Alpes-de-Haute-Provence, southern France March 31, 2015. REUTERS/Jean-Paul Pelissier
A parking structure at the University of California San Diego uses innovative solar trees to collect renewable energy from the Sun February 8, 2011. Each "Solar Tree" will generate more than 17,000 hours of clean energy per year, enough to power more...more
A bus passes a green "Solarbox" to charge his phone in central London October 3, 2014. Some of London's famous red telephone boxes are going green, transformed into free, solar-powered mobile chargers to provide a carbon-neutral source of energy in...more
A laborer, who works in a salt pan, covers her face beside a solar panel outside a shelter in Little Rann of Kutch in the western Indian state of Gujarat March 2, 2014. REUTERS/Ahmad Masood
A student test drives a motorized rickshaw running on solar energy on the streets of Lima October 28, 2010. Werner Pacheco, a teacher and researcher at the San Marcos University's School of Electronics and Electrical Engineering (FIEE), built the...more
A general view of the new PS20 solar plant which was inaugurated last month at "Solucar" solar park in Sanlucar La Mayor, near Seville, October 7, 2009. The solar thermal power plant uses mirrors to concentrate the sun's rays onto towers where they...more
The New York Institute of Technology's energy-efficient, solar-powered house is seen at the Solar Decathlon in Washington on October 9, 2005. REUTERS/Solar Decathlon/Stefano Paltera/Handout
A woman stands in front of an illuminated house powered by solar energy at Meerwada village of Guna district in the central Indian state of Madhya Pradesh June 18, 2012. REUTERS/Adnan Abidi
A man looks at a lighted solar tree at the Jerusalem Festival of Lights at Jerusalem's Old City June 9, 2010. REUTERS/Ronen Zvulun
The Westgate shopping mall, which was closed in the aftermath of a 2013 attack that killed 67 people, will reopen this week.
Wisconsin Governor Scott Walker becomes the 15th candidate to seek the 2016 Republican presidential nomination.
Typhoon Chan-hom, one of the most powerful typhoons to strike eastern China in decades, disrupted travel and forced the evacuation of more than a million...
The Republican presidential candidates.