好好搜. Makes texting and talking free. 博文_yingzhe. Future Challenges. Future Challenges Whilst nothing is certain, some things that may lie ahead are now very, very probable indeed. If taking a short-term horizon of a year or even a decade they can perhaps be ignored. However, any medium- or long-term planning now has to include an awareness of those effectively inevitable future challenges as listed below.
Like it or not, the Age of Plenty is now coming to an end . . . Peak Oil We are fast approaching the situation of "Peak Oil" where there is less oil left in the ground than we've taken out. Peak Water Over the next couple of decades many nations will hit a situation of "Peak Water" where demand for fresh water starts to outstrip supply. Climate Change According to the Intergovernmental Panel on Climate Change (IPPC), increases in average global air and ocean temperatures, a widespread melting of snow and ice, and rising sea levels, all signal that our climate is changing.
Food Shortages Resource Depletion Viral Pandemics Population Ageing Religious Tensions. OpenStreetMap. Shuttle Radar Topography Mission. U.S. Releases Enhanced Shuttle Land Elevation Data On September 23, 2014, the White House announced that the highest-resolution topographic data generated from NASA's Shuttle Radar Topography Mission (SRTM) in 2000 was to be released globally by late 2015. The announcement was made at the United Nations Heads of State Climate Summit in New York. Since then the schedule was accelerated, and all global SRTM data have been released.
See the full JPL Release 2014-321. Previously, SRTM data for regions outside the United States were sampled for public release at 3 arc-seconds, which is 1/1200th of a degree of latitude and longitude, or about 90 meters (295 feet). See an index map of the newly available full-resolution data. The new data are available for download from the USGS EROS Data Center - see Public Data Distribution for details. See the Africa image above and its caption at the PIA04965. These additional fly around videos further illustrate SRTM elevation data: SRTM Publication. XDash Weblog.