Google Spreadsheets supports cell formulas typically found in most desktop spreadsheet packages. In this lesson we will calculate the numbers of empty cells in a Spreadsheet.
Nature is everything around us, we are nature and we should be doing everything in our power to preserve it. Now let's learn about nature in German language.
Prepare to be dazzled. Spectacular timelapse video created from the pictures taken by the astronauts who worked on the International Space Station in the last 11 years.
Scientist may be an expert in one or more areas of science. Some of them have decisively influenced on the development of mankind. Let see how many of them you know.
Microsoft introduced details of their novelty that is suppose to be a part of the reason why 2012 is going to be the most epic year in Microsoft's history.
A tsunami is a series of water waves caused by the displacement of a large volume of a body of water, generally an ocean or a large lake. Take this quiz and build up your Dreevoo score.
