Index and credits:
1. A Libyan honor guard stands at attention during the arrival of U.N. Special Envoy to Libya Bernardino Leon in Tripoli.
2. Deer rut in the early morning frost in Richmond Park in London, England. (Rob Stothard/Getty Images)
3. A generator in a powerhouse during the inauguration of the Stung Russey Chrum Krom hydro-electric dams in Koh Kong province. (AFP / Getty Images)
4. Trial jump at the third stage of the four hills ski jumping tournament in Innsbruck, Austria. (Matthias Schrader /AP Photo)
5. Penguins swim in their pool during the annual stock take at London Zoo, Monday. (Kirsty Wigglesworth /AP Photo)