If you want you can turn any Microsoft PowerPoint presentation into a video so you can play the presentation on a computer that doesn't have Microsoft Office installed.
If you'r a fast typer and don't pay much attention to spelling or English isn't your first language? No biggie, you can get a spell checker add-on for Firefox.
On Friday, a solar plasma the size of a couple of Earths was unleashed from the Sun and the amazing display was captured by one of the NASA's sun observing spacecrafts.
