Did you know that there used to be palm trees in the Arctic? It was 56 million years ago, but it was caused by greenhouse gases and carbon dioxide released into the atmosphere at an alarming rate. It’s hard to imagine palm trees swaying in a place we think of polar bears and glaciers, but due to the greenhouse gas effect, that was a reality.
Urbanization is just one of the many effects of overpopulation here on Earth, along with the rapid dwindling of the natural environment as a whole. The general consensus across the scientific community is that a number of factors have contributed to global overpopulation. More than 7.7 billion people live on Earth as of 2020, largely due to longer life expectancies, improved sanitation, and advancements in medicine over the last few centuries.
The idea behind controlling waterways through dams isn’t new. The oldest dam in the world, the Kallanai Dam, began operation on the Kaveri River in Tamil Nadu, India in the 2nd century, and it’s still in use today.
Every year, California wildfires force residents to temporarily evacuate their homes and seek refuge in shelters, motels, or with relatives. While the wildfire season is one of the few things that truly unites both Northern and Southern California, it’s also not a new phenomenon: you can track over a century of California wildfires recorded by Cal Fire as part of a California Public Radio Project.
This NASA visualization shows a rapid decline in Arctic Sea ice over the last 35 years, based on satellite observations. The situation is really bad: in the 1st week of January 1988, over 1.2 million sq. miles (3.1 million km2) were covered by sea ice 4 years of age or older, compared with just over 44,000 sq. miles (114,000 km2) in the same week in 2019. Less than 5% once it was!
The era of climate change is upon us, and if we stand idle, its far-reaching negative impact will only increase. Increased emissions of greenhouse gases like carbon dioxide, methane, and nitrous oxide play a significant role in the onset of climate change. Gases like these trap heat in the atmosphere, not allowing temperatures to fall. This results in global warming, and the subsequent climate change consequences. While this climate disaster has repercussions at many levels, its effect on public health is one of grave concern.
Mars, often referred to as the Red Planet, boasts an atmosphere dominated by carbon dioxide, a gas typically associated with warmth-inducing greenhouse effects on Earth. Yet, anyone expecting balmy temperatures on Mars would be in for a chilly surprise. Despite its CO₂-rich atmosphere, Mars remains an icy desert with temperatures often plummeting far below freezing. The paradoxical nature of a cold planet blanketed by a gas known for trapping heat sparks curiosity and demands an explanation. In this article, we’ll delve into the multifaceted reasons behind Mars’ frigid climate, revealing the intriguing interplay of astrophysical, geological, and atmospheric factors that keep our neighboring planet cold.
One fact about our time is becoming increasingly well-known. No matter how far you travel, no matter in which direction you point, there is nowhere on Earth that remains free from the traces of human activity. The chemical and biological signatures of our species are everywhere. Transported around the globe by fierce atmospheric winds, relentless ocean currents, and the capacious cargo-holds of millions of fossil-fuel-powered vehicles, nowhere on Earth is free from humanity’s imprint. Pristine nature has permanently blinked out of existence.
What does the term crocodylian bring to mind? A big reptile with a chomping jaw? But exactly which environmental factors created today’s large crocodiles?
Today, climate change is a very real and looming threat. However, when the subject of climate change and possible solutions is discussed, the phrase “we need bigger changes” is often bandied about. Individuals tend to shift the responsibility of fixing human-caused damage to the environment to larger systems – but with little concrete action being taken by larger entities, potential solutions to mitigate climate change remain largely unaddressed and unimplemented.