Robert Hooke: English scientist who discovered the cell By Ailsa Harvey, How It Works magazine Robert Hooke was the English polymath who discovered the building blocks of all life.
The international date line, explained By Tom Garlinghouse The international date line is a concept often fraught with misunderstanding and confusion. But it plays an important role in our lives and a central role in timekeeping.
Black bears: The most common bear in North America By Patrick Pester American black bears are the smallest and most common bear in North America. They are highly adaptable, with a diet that includes honey and moose.
Acetaminophen: Dosage, side effects & overdose By Jessie Szalay Acetaminophen belongs to two classes of drugs: analgesics (pain relievers) and antipyretics (fever reducers).
What is Juneteenth? By Mindy Weisberger The American holiday Juneteenth is observed on June 19. It is also known as Emancipation Day and Black Independence Day.
Having a baby: Stages of pregnancy by trimester By Cari Nierenberg Pregnancy lasts about 40 weeks and is divided into three stages, or trimesters, each with unique symptoms and changes in the mother's body and in fetal development.
Cottonmouth snakes: Facts about water moccasins By Jessie Szalay, Patrick Pester Cottonmouths, or water moccasins, are venomous snakes in North America that display white mouths when threatened.
What is the Milky Way? By Paul Sutter Find out all the science of the Milky Way, including the size of our home galaxy, who discovered it and how it's on a collision course with another galaxy.
Mood swings & mommy brain: The emotional challenges of pregnancy By Cari Nierenberg A woman's emotional well-being and her mental outlook play important roles in pregnancy.
Lemurs: A diverse group of endangered primates By Patrick Pester Lemurs include a diverse group of primates, from sun-worshipping ring-tailed lemurs to the peculiar, nocturnal aye-aye.
Greenhouse gases: Causes, sources and environmental effects By Tiffany Means, Marc Lallanilla Greenhouse gases are atmospheric gases that absorb infrared radiation and trap heat in the atmosphere. Increases in emissions of these gases are leading to climate change and global warming.
Sunken cities: Discover real-life 'Atlantis' settlements hidden beneath the waves By Nikole Robinson, How It Works magazine Explore the submerged cities to discover why they didn’t survive the test of time.
Human brain: Facts, functions & anatomy By Tanya Lewis, Ashley P. Taylor The human brain is the command center for the human nervous system.
What is plate tectonics? By Tiffany Means Blame plate tectonics for Earth’s mountains, earthquakes, volcanoes, and why its continents fit together like pieces of a giant jigsaw puzzle.
What is quantum entanglement? By Paul Sutter Quantum entanglement is one of the uber-bizarre phenomena seen when things get itty-bitty. Here's a look at how entanglement works and why it's so weird.
What are Homo sapiens? By Sarah Wild All living humans are Homo sapiens. Here's what scientists know about the origin of our species.
Vaginal birth vs. C-Section: Pros & cons By Cari Nierenberg, Sarah Wild A woman can deliver her baby either by vaginal birth or a C-section. Here are the advantages and disadvantages of both.
How does time work? By Jonathan O'Callaghan, How It Works magazine From the beginning of the universe to the present day, it's one of the few things we regard as regular and unchanging. But is it really so constant? We take a look at the physics of time.
Frederick Douglass: The slave who became a statesman By All About History How did Frederick Douglass, an enslaved man from Maryland, become an international celebrity, author and abolitionist hero?
