Record setters

Earlier this week, the world's shortest man, He Pingping, age 21, died after developing chest pains while filming a television show in Italy. Pingping suffered from primordial dwarfism, a condition which kept him from ever growing taller than 73 cm (2 feet 5 inches) tall. Pingping was recognized by the Guinness World Records organization, who also held a 'World Records Day' last November, encouraging people all over the world to set their own records. Collected here are a group of superlatives, recent photos of world records and record attempts around the world.

He Pingping of China smiles as Sultan Kosen of Turkey rests his hands on He's shoulders during a promotional event in Istanbul, Turkey on January 14, 2010. He, with a height of 73 cm (2 feet 5 inch), and Kosen, with a height of 246.5 cm (8 feet 1 inch), have been listed in the Guinness World Records as the world's shortest man and tallest man respectively. (REUTERS/Osman Orsal)

Robots, part III

Robots continue to grow in their importance amongst law enforcement, military use, medical research and care, space exploration and entertainment, among other tasks. Robots recently in the news include Russia's decades-old Lunokhod rovers - recently photographed from Lunar orbit, the naming of 'Curiosity', NASA's next Mars rover, and a robotic dental patient, designed for realistic training. Collected here are a handful of relatively recent photographs of robots around the world - and the solar system.

A robotic hand which has been designed to aid army bomb disposal personnel is demonstrated by Rich Walker of Shadow Robot Company at the Centre for Defence Enterprise in Oxford, in central England, on February 11, 2010. (BEN STANSALL/AFP/Getty Images)

Earth Hour 2010

Beginning in Sydney, Australia three years ago, Earth Hour has grown into a global observance. States, large organizations and individual people observed Earth Hour 2010 on Saturday March 27th, as homes, office towers and landmarks turned off their lights for an hour starting at 8.30 pm local time to raise awareness about climate change and the threat from rising greenhouse gas emissions. Collected here are a series of before-and-after photographs from this year - which (starting with the second one below) will fade between 'on' and 'off' when clicked.

These two photos show Malaysia's landmark Petronas Twin Towers before, left, and after being turned off its lights to mark Earth Hour in Kuala Lumpur, Malaysia, Saturday, March 27, 2010. (AP Photo/Lai Seng Sin)

Journeys to the International Space Station

April 12th marked the 49th anniversary of human spaceflight, when Yuri Gagarin became the first person to orbit the Earth in 1961. At this moment, 13 humans are currently in low-Earth orbit, aboard the International Space Station. Several were already aboard the ISS when a Soyuz TMA-18 brought a fresh crew up from the Baikonur Cosmodrome on April 2nd - they were later joined by the crew of the Space Shuttle Discovery on the 131st shuttle mission to date (only three remaining launches scheduled). NASA recently signed a new deal with Russia for six more round-trips to the ISS, at a cost of $55.8 million per seat. Collected here are recent photos of the Space Station, its current crew, their launch vehicles, and the views from above.

The Space Shuttle Discovery hurtles toward space after liftoff from Launch Pad 39A at NASA's Kennedy Space Center in Florida at 6:21 a.m. on April 5th, 2010. The seven-member is delivering the multi-purpose logistics module Leonardo, filled with supplies, a new crew sleeping quarters and science racks that will be transferred to the International Space Station's laboratories. The crew also will switch out a gyroscope on the station's truss, install a spare ammonia storage tank and retrieve a Japanese experiment from the station's exterior. (NASA/Tony Gray and Tom Farrar)

Earthquake in Yushu, China ( GEMPA BUMI )

On April 14th, residents of China's remote Yushu County, located on the Tibetan plateau, were awoken by a magnitude 6.9 earthquake. In the sparsely populated villages and the larger town of Gyegu, thousands of wood-earth buildings collapsed and many larger structured heavily damaged or destroyed. The region is difficult to reach for the response teams of the Chinese government outside aid groups - lying at an elevation of 3,700m (12,000 ft) and connected by few roads, most of which were damaged in the quake. Chinese state media now says the death toll has risen to 1,144. Rescuers continue to search for survivors as homeless residents work to recover what they can and set up shelter from the freezing overnight temperatures. (36 photos total)

A rescuer searches for survivors at a collapsed building in Yushu County, northwest China's Qinghai province, Friday, April 16 , 2010. (AP Photo/Andy Wong)

petir

As ash from Iceland's Eyjafjallajokull volcano continued to keep European airspace shut down over the weekend, affecting millions of travelers around the world, some government agencies and airlines clashed over the flight bans. Some restricted airspace is now beginning to open up and some limited flights are being allowed now as airlines are pushing for the ability to judge safety conditions for themselves. The volcano continues to rumble and hurl ash skyward, if at a slightly diminished rate now, as the dispersing ash plume has dropped closer to the ground, and the World Health Organization has issued a health warning to Europeans with respiratory conditions. Collected here are some images from Iceland over the past few days.

Lightning streaks across the sky as lava flows from a volcano in Eyjafjallajokul April 17, 2010. (REUTERS/Lucas Jackson)

Earth Day 2010

Yesterday was Earth Day, since 1970 it's been a day set aside to remember and appreciate the Earth's environment, and all of our roles within it. As a way to help appreciate and observe our environment, I've collected 39 recent images here, each a glimpse into some aspect of the world around us, how it affects and sustains us, and how we affect it. Here's hoping everyone had a great Earth Day yesterday.

The most detailed true-color image of the entire Earth created to date. Using a collection of satellite-based observations, scientists and visualizers stitched together months of observations of the land surface, oceans, sea ice, and clouds into a seamless, true-color mosaic of every square kilometer of our planet. Much of the information contained in this image came from a single remote-sensing device-NASA's Moderate Resolution Imaging Spectroradiometer, or MODIS. Flying over 700 km above the Earth onboard the Terra satellite. (NASA/Goddard Space Flight Center)