Monthly Archives: June 2018

Table of Edible pH Indicators (Todd Helmenstine) — Red cabbage juice is the best known edible pH indicator, but there are many safe fruits, vegetables, and flowers that change color in response to acidity or alkalinity. The plant pigments responsible for the color change are anthocyanins. Most of these molecules change from red to purple to blue in […]

Edible pH Indicators From Your Kitchen and Garden

This entry was posted on June 23, 2018 by Anne Helmenstine (updated on September 12, 2021)

The largest solstice celebration in the world is at Stonehenge in England. — The solstice is the longest or shortest day of the year, depending on whether you live in the Northern or Southern Hemisphere. It marks the official beginning of summer and winter. Here’s a collection of useful and interesting solstice facts. The Solstice Marks the Longest and Shortest Day of the […]

Solstice Fast Facts

This entry was posted on June 21, 2018 by Anne Helmenstine (updated on December 25, 2022)

Cats eat grass because it's a good source of certain nutrients, may help their digestive system, and simply because they enjoy it. (Ethan Weil) — Why do cats eat grass? The answer is that it offers some health benefits. Cats are obligate carnivores, which simply means they need to eat meat to satisfy their nutritional needs, yet wild cats naturally ingest some grass with prey. Both wild cats (e.g., bobcats, lions, and tigers) as well […]

Why Do Cats Eat Grass?

This entry was posted on June 18, 2018 by Anne Helmenstine (updated on May 10, 2021)

Elements found in nature — There are 118 elements on the periodic table, but how many of these elements can be found in nature? There are 98 elements that occur naturally. The other 20 elements only exist when they are synthesized. Of the 98 naturally-occurring elements, 10 only occur in trace amounts. Some of the […]

What are the Naturally Occurring Elements? Elements Found In Nature

This entry was posted on June 12, 2018 by Todd Helmenstine (updated on May 17, 2022)

Wild Cats Wordsearch — Do you know your wild cat species? This wild cats word search contains 24 different wild cat breeds. Find the words from the list forward and backward in vertical, horizontal, and diagonal directions. The puzzle is optimized to fit on a standard 8.5″x11″ sheet of paper, but it fits nicely […]

Wild Cats Word Search

This entry was posted on June 9, 2018 by Todd Helmenstine (updated on May 10, 2021)

How to Fix Dry Nail Polish — Use science to fix dry nail polish. Learn what works, what doesn't, and how to keep your polish from drying out in the first place.

How to Fix Dry Nail Polish

This entry was posted on June 4, 2018 by Anne Helmenstine (updated on June 14, 2021)