Tara Haelle
Author
Series
Formats
Description
"Living in a world as vast as Earth, it can be easy to forget that this blue planet is actually a tiny speck within a massive universe filled with planets, moons, stars, asteroids, comets, dark matter--and maybe even alien life. Read about Earth's place in the Milky Way and the larger universe and how humans are learning about the endless frontier of space--and whether we are alone" -- Back cover.
2) Light waves
Author
Series
Formats
Description
"A crack of lightning. The blue glow of a phone screen. A blinking firefly. The blazing sun. A camera's rapid flash. No matter the source, light travels in waves, and it does so at a speed faster than anything else in the universe. But what is light, and how do we study it? Read about light waves and light's properties and how people--and animals--manipulate light for their own purposes" -- Back cover.
3) Sound waves
Author
Series
Formats
Description
"Squeak! Grrr! CRACK! Shhh! Our world is filled with sounds big and small, pleasant and annoying. But how is all that sound created, and what can it do? Sound helps us communicate, but it can do so much more. Powerful sound waves can let us see inside a human body and help us locate sunken ships! Learn how sound travels and the many roles it plays in our world" -- Back cover.
Author
Formats
Description
Vaccines are biological substances that cause the human immune system to build up its defenses against specific diseases. Public health officials recommend a series of vaccines for all children, as well as some vaccines for teenagers and adults. But not everyone gets the vaccines they need. Many poor nations don't have the resources to deliver vaccines to every community. Some parents refuse to have their children vaccinated because they don't believe...
Author
Series
Description
The Earth buries its past. Living things that die and then slowly become part of the Earth are called fossils. This is where the skills of a paleontologist come into play. Their job is to find fossils and study them in order to make sense of what was going on here on Earth for billions of years before there were ever human beings. Learn all about the fossil record, the amazing discoveries and where they were found, and what it takes to become one...
10) Energy Exchange
Author
Series
Description
When you flip a light switch, it turns on the light. But how? Where does that energy come from? How does it get to the light bulb? Learn about all kinds of energy that power our world and how we can make sure we never run out!
Author
Description
In the era of questionable Internet "facts" and parental oversharing, it's more important than ever to find credible information on everything from prenatal vitamins to screen time. The good news is that parents and parents-to-be no longer need to rely on an opinionated mother-in-law about whether it's OK to eat sushi in your third trimester, an old college roommate for sleep-training "rules," or an online parenting group about how long you should...