Science and Technology
Maintaining your privacy online is a tricky matter, as I’m sure you know. And though you’re using a firewall as well as anti-spyware software, and you’ve password-protected your computer, that does almost nothing to keep your information secure online. Here are some ideas to help keep you to yourself when surfing the Web. I’ve divided the information into basic and advanced sections for your convenience.
"That's one small step for [a] man, one giant leap for mankind."
Born August 5, 1930, Neil Armstrong has been an aviator, test pilot, and university professor. And, on July 21, 1969, he became the first man to walk on the moon. In the days before the Internet or cable television, people around the world gathered around their sets to watch history being made.
On a hot day in July forty years ago, millions of people were huddled around their radios and television sets waiting for the exciting news: “The Eagle has landed.”
In “Moonshot, The Flight of Apollo 11,” author-illustrator Brian Floca describes Neil Armstrong as “calm as a man who just parked a car” when he radios Houston that he’s landed safely on the moon. Floca captures the mission’s mixture of calm professionalism and high drama in poetic words and watercolors.
The afternoon breeze, humidity, and thunderheads cued the adults to listen to the radio. The broadcast confirmed their suspicions of impending, severe thunderstorms. We went about the business of stowing the toys, the lawn furniture, and garden tools into Grandma and Grandpa's sheds.
Clickety-clack, down the track, faster, faster goes the train. Puff, puff, toot, toot, off we go. Grab a train book and settle in for story time where excitement waits around every bend.
Netbook use is on the rise everywhere--including your local library! Find outwhat you need to know about these tiny, affordable computers before you purchase.
This year marks the two hundredth anniversary of the birth of Charles Darwin and the hundred and fiftieth anniversary of his ground-breaking book, “On the Origin of Species.” Kathryn Lasky’s new illustrated biography, “One Beetle Too Many,” makes an appealing introduction for nine- to twelve-year-olds to the man and his “idea that scared the world.”
What do the Earth, electric motors, and your computer all have in common?
These things are all influenced by magnets.
The Earth has a liquid metal core that acts like a bar magnet. It gets its magnetism from being near electrical currents beneath the surface. Because the Earth is not perfectly shaped, every so often the direction of the field will change. Scientists have found evidence that this has occurred at least 171 times over the past 71 million years. How do they know that? Magnets!
It has been fascinating to observe the rising adoption rates of netbooks. Think of netbooks as filling the technological niche between smartphones (such as the Blackberry and the iPhone) and full-sized laptops: they are compact, light-weight, and inexpensive computers for the price-conscious mobile user. Netbooks generally feature a diagonal screen size of 7–10 inches, wi-fi, a slower processor which consumes less power (resulting in often considerably longer battery life), a smallish hard drive, and no built-in optical drive (CD/DVD).
The 365 Days of Astronomy Podcast is a project that will publish one podcast per day, for all 365 days of 2009. The podcast episodes are written, recorded and produced by people around the world.