Science – Page 3 – For Facts' Sake!

Was there once liquid water on Mars?

Evidence of riverbeds, lake deposits, and ice caps confirms Mars once had liquid water. Scientists… Was there once liquid water on Mars?

General relativity allows for time dilation, but no evidence supports backward time travel. According to… Is time travel to the past physically possible?

As temperatures rise, plastics break down faster, releasing more tiny microplastic particles into the environment.… Is microplastic pollution worsening over time?

Some studies suggest decisions are made subconsciously before conscious awareness, but the debate continues. Neuroscientists… Is free will an illusion based on neuroscience?

Tesla’s funding was cut, and his ideas on wireless power were never fully developed, but… Was Nikola Tesla’s work on wireless energy suppressed?

Some theories suggest a link, but no definitive scientific proof connects quantum physics and consciousness.… Has quantum mechanics been used to explain consciousness?

The placebo effect can improve symptoms, but it does not cure underlying diseases. It happens… Is the placebo effect strong enough to cure diseases in some cases?

No evidence suggests a universal cure exists or has been hidden, but medical advancements are… Has a cure for cancer been suppressed by powerful interests?

The Earth’s core is not entirely molten. The outer core is molten (liquid metal), but… Is the Earth’s core entirely molten?

The Big Bang Theory, supported by cosmic microwave background radiation and galaxy expansion, strongly suggests… Did the universe have a definitive beginning?

Carbon is the basis of organic molecules, essential for life as we know it. This… Is carbon the primary element in all known life forms?

According to Einstein’s relativity, nothing can surpass the speed of light in a vacuum. In… Can an object exceed the speed of light in a vacuum?

Lower atmospheric pressure at high altitudes decreases the boiling point of water. At sea level,… Is the boiling point of water lower at higher altitudes?

While the rainforest plays a role in oxygen production, much of the oxygen is reabsorbed… Does the Amazon Rainforest produce 20% of the Earth’s oxygen?

Since 2019, the kilogram has been defined by fundamental physical constants, not a metal prototype.… Is the kilogram defined by a physical object?

The brainstem controls vital functions like breathing and heart rate, making survival impossible without it.… Can a person survive without a functioning brainstem?

This is a myth; astronauts confirm that the Wall is not visible from the Moon… Is the Great Wall of China visible from the Moon with the naked eye?

DNA (deoxyribonucleic acid) contains genetic instructions for growth, reproduction, and function in almost all known… Is DNA the molecule that carries genetic information in most living organisms?

While robotic missions have explored Mars, no human has physically landed there yet. Over the… Has a human ever set foot on Mars?

Gold (Au) is a naturally occurring element with atomic number 79, known for its unique… Is gold an element on the periodic table?

Sound requires a medium (air, water, or solid) to propagate. In a vacuum, there are… Can sound travel through a vacuum?

The human microbiome consists of trillions of bacteria, outnumbering human cells by about 10:1, though… Does the human body contain more bacterial cells than human cells?

Antarctica holds the record for the coldest temperature recorded on Earth (-128.6°F/-89.2°C). This extreme cold… Is Antarctica the coldest continent on Earth?

Mammals are vertebrates, meaning they all have a spinal column, a defining trait of their… Do all mammals have a backbone?