Ben Biggs

REFERENCE Equinoxes occur twice a year, with night and day being almost the exact same length all across the world. The next equinox is the March vernal equinox, beginning on March 20, 2025 in North America.

The deadliest cancers aren't necessarily the ones that kill the most people overall; they're the ones with the lowest survival rates.

Reference Copperhead snakes are commonly found in the eastern U.S., where they inflict more bites than any other snake species. Luckily, their venom is relatively mild and rarely deadly for humans.

Inside How It Works 166: Discover 10 of the strangest facts about your brain.

Reference Geiger counters use the natural process of ionization to detect and measure radiation levels

Reference Cancer can affect any part of the body, requiring doctors to employ robust methods such as MRI scans, blood tests and computed tomography to detect and classify it.

reference Acid rain is any form of precipitation that contains acidic components, such as sulfuric or nitric acid. It affects nearly everything: plants, soil, trees, buildings and even statues.

Reference In the third week of pregnancy, there won't be any major outward changes in a woman's body, but some pregnancy symptoms may have started.

reference A colon cleanse is all the rage among wellness buffs. But health experts say that they aren't helpful and can actually be dangerous.

reference Spiny on the outside, sweet on the inside, pineapples are one fantastic fruit.

Reference Spinach is Popeye the Sailor Man's favorite veggie for good reason: it's dense in vitamins and minerals, low in calories and may help with several health conditions.

Reference The elements in the periodic table are arranged according to the transition from metal to nonmetal elements.

Reference Chemistry is the study of matter, its properties, how and why substances combine or separate to form other substances, and how substances interact with energy.

reference Riboflavin is a B-complex vitamin that helps the body break down carbohydrates, proteins and fats to produce energy.

REFERENCE What makes you, you? Psychologists sketch out personality traits using the "Big Five".