Which one do you use?

Calling someone a “basket case” is far darker than you think. Slang 101

Image: Nick Fewings

A lot of slang terms and everyday words have surprisingly rich backstories tied to real historical events and practices. From dire situations to the flicker of oil lamps, these expressions once described literal experiences before turning into figures of speech. You probably use quite a few of these, but did you know what they really mean?

Image: Oleksandr Voloshchenko

"Run-of-the-mill" these days means something ordinary or unremarkable, like in the sentence: The film on television last night was very run-of-the-mill.

Originally, the phrase referred to ungraded lumber coming straight from a sawmill—nothing selected or special, just the standard output.

Image: GR Stocks

To have a chip on one’s shoulder means acting defensively or aggressively, as if expecting to be mistreated, like in: He’s hard to deal with; he’s always had a chip on his shoulder about his lack of education.

The phrase comes from the old practice of a man placing a wood chip on his shoulder, daring others to knock it off and start a fight.

Image: Mallory Johndrow

The idiom a witch-hunt refers to the unfair pursuit or persecution of people with unpopular views, often without proper evidence.

It comes from real witch-hunts in history, especially in the U.S., where many were accused of witchcraft during periods of mass hysteria.

Image: David Popkov

The idiom have an axe to grind means having a personal or selfish reason for getting involved in something, as in: I have no axe to grind, I just want to help.

It likely comes from a story Benjamin Franklin told about a man who tricked someone into sharpening his axe under the pretense of curiosity.

Image: Robert Gramner

The idiom bark up the wrong tree means to make a wrong assumption or take the wrong approach, like in: You're barking up the wrong tree if you think you can influence the judge.

It comes from raccoon hunting, where dogs sometimes mistakenly barked at the wrong tree, thinking the raccoon was there.

Image: Sergio Arze

The idiom on the breadline means living with barely enough money, as in: The widow and her children were living on the breadline.

It dates back to the Great Depression, when the poorest queued for free food at soup kitchens run by groups like the Red Cross and Salvation Army.

Image: Bernard Tuck

The idiom burn the midnight oil means to work late into the night, often while studying or finishing tasks.

It comes from the time before electricity, when people used oil lamps for light. Though the lamps are long gone, the phrase is still used.

Image: Steve & Barb Sande

The phrase make the grade means to meet a required standard or succeed, though many assume it comes from school.

But it originates from railroads, where powerful trains had to climb steep gradients—if they reached the top, they "made the grade."

Image: David Trinks

The idiom show your true colors means to reveal your real character or intentions, often after hiding them.

It comes from pirate ships that sailed under false flags to trick their targets, only raising their true flags when ready to attack.

Image: Unseen Histories

The idiom the time is ripe means the moment is ideal for action or change, drawing from the image of perfectly ripe fruit: sweet and ready, but quick to spoil if missed.

Martin Luther King Jr. used this phrase in his 1968 speech Remaining Awake Through a Great Revolution to stress the urgency of social action.

Image: Omar Roque

The term basket case began during World War I, referring to soldiers who lost all four limbs and had to be carried in baskets.

Over time, it came to describe someone seen as helpless, overwhelmed, or mentally unstable, often due to extreme stress or anxiety.

Earth’s strangest secrets: 10 facts that will shock you

Image: elizabeth lies

Our planet is full of strange phenomena that continue to intrigue and puzzle scientists and curious minds alike. From bizarre weather patterns to unique geological structures, Earth’s quirks often defy explanation, and some of these mysteries are downright mind-blowing. Let’s dive into some of the most unexpected and fascinating facts about our world that might just make you see Earth in a whole new way!

Image: Craig Chilton

The continents are constantly moving, drifting at an average rate of about 1 inch per year. Over millions of years, they slowly shift apart or toward each other due to plate tectonics.

This movement causes earthquakes and leads to the formation of mountain ranges, such as the Himalayas. Earth’s continents are not static but dynamic, continually reshaping the planet’s geography.

Image: Cassie Matias

Lake Vostok in Antarctica lies buried beneath 2.5 miles of ice, creating an isolated ecosystem.

This subglacial lake has been sealed off from the outside world for millions of years, making it a prime location for studying microbial life in extreme conditions. Scientists believe it may harbor unique, previously undiscovered life forms, despite being entirely isolated.

Image: David Clode

Some oceans glow in the dark thanks to bioluminescent organisms.

This phenomenon occurs when certain types of plankton and algae, such as dinoflagellates, emit light when disturbed. The natural glow is often visible in various coastal areas, particularly during the warmer months. It’s a stunning display of nature’s ability to create light from living organisms.

Image: Renel Wackett

A full rotation of Earth takes approximately 23 hours, 56 minutes, and 4 seconds.

While we use a 24-hour day for convenience, the actual time it takes Earth to complete one full rotation is slightly less than that. This discrepancy arises from Earth’s orbit around the Sun, which causes a full solar day to be slightly longer than a sidereal day.

Image: Philip Graves

The temperature at Earth’s inner core exceeds 10,300°F, making it hotter than the surface of the Sun.

Composed primarily of iron and nickel, the inner core remains solid due to immense pressure. Despite its solid state, it is still hotter than the Sun’s surface, which reaches only about 5,500°C (9,932°F). This extreme heat plays a key role in generating Earth’s magnetic field and driving internal convection currents.

Image: Jametlene Reskp

Earth’s magnetic poles flip every several hundred thousand years.

This process, known as geomagnetic reversal, causes the North and South Magnetic Poles to switch places. Although the reversal unfolds over thousands of years and lacks a definitive explanation, evidence from rocks and minerals reveals a long history of these shifts.

Image: NASA Hubble Space Telescope

Earth occasionally has a temporary second moon, known as a "quasi-satellite."

This phenomenon involves small asteroids caught in Earth's gravitational pull, orbiting the planet for a period before drifting away. One such object, 2020 CD3, was temporarily captured in Earth’s orbit for about three years before being ejected back into space.

Image: NOAA

While deserts are typically associated with heat, Antarctica is actually the largest desert on Earth.

Deserts are defined by their low precipitation, not just temperature. With its extremely cold climate and minimal rainfall, Antarctica qualifies as the largest desert on the planet, spanning roughly 5.4 million square miles.

Image: Alfonso Betancourt

Deep beneath the Earth’s surface lies a massive reservoir of water.

This water, trapped in minerals, is located about 400 miles below the Earth’s crust. Scientists believe this subterranean ocean could contain more water than all of Earth’s surface oceans combined. This discovery could have significant implications for our understanding of Earth’s water cycle.

Image: Miguel A Amutio

Earth’s atmosphere is primarily composed of nitrogen, a gas that is inert and does not support life.

Oxygen, essential for life, makes up about 21% of the atmosphere. While nitrogen constitutes the vast majority of Earth's atmosphere, it plays a crucial role in maintaining atmospheric pressure, even though it does not directly interact with most living organisms.