Memories is the free & easy to use Website and App that helps keep life's most precious moments alive. Join online or download from the App Store / Google Play.
UNdata is an internet-based data service which brings UN statistical databases within easy reach of users through a single entry point (http://data.un.org/) from which users can now search and download a variety of statistical resources of the UN System.
Our population is expected to grow to over 9 billion by 2050, yet the ability of our environment to provide space, food, and energy are limited. Explore population growth from 1 CE to 2050, see how our numbers impact the environment, and learn about the key advances and events allowing our numbers to grow.
Some galaxies, nebulas and star clusters are visible with backyard telescopes, binoculars or the unaided eye. Explore a new Hubble gallery of such objects from the popular Messier catalog and learn how you can view these objects yourself!