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Showing posts from April, 2018

Living in America's Deserts: A Population Paradox

The arid landscapes of America's deserts, once considered inhospitable frontiers, now host thriving metropolitan areas. According to the U.S. Census Bureau, over 9 million people call these xeric regions home, creating a fascinating intersection of human adaptation and desert ecosystems. America's Major Desert Regions The Environmental Protection Agency's ecoregion data  identifies four major desert regions in the United States: The Sonoran Desert: Home to approximately 3.8 million residents, including the Phoenix metropolitan area, America's largest desert city. The National Park Service notes this desert receives biannual rainfall, supporting the iconic saguaro cactus and diverse wildlife. The Mojave Desert: Housing 2.3 million people, including Las Vegas. The U.S. Geological Survey identifies it as North America's driest desert, yet it supports major urban centers through extensive water management systems. The Chihuahuan Desert: With 2.5 million inh...

Earth’s Geologic Time Scale: A Window into Deep Time

The rocks beneath our feet hold the story of Earth’s 4.6 billion-year history. Scientists have pieced together this timeline using the geologic time scale , which divides Earth's past into eons, eras, periods, and epochs. Each division marks significant changes in the planet’s climate, landscape, and life forms. One of the best resources for understanding geologic time is the United States Geological Survey ( USGS ) , which provides a Major Chronostratigraphic and Geochronologic Units Chart based on the latest data from the International Commission on Stratigraphy (ICS) . Below, you’ll find the chart that outlines the vast history of our planet: Breaking Down the Geologic Time Scale Earth’s history is divided into different time units: Eons – The longest periods (e.g., the Phanerozoic Eon, which began 541 million years ago and continues today). Eras – Broad divisions marked by significant changes in life and climate (e.g., the Mesozoic Era, the age of dino...

Where the World's Forests Still Thrive—and Where They're Disappearing

Areas of the World with over 30% Forest Cover Forests are more than just vast stretches of trees. They are the lungs of our planet, absorbing carbon dioxide, regulating temperatures, and supporting biodiversity. But while some parts of the world remain covered in dense, thriving forests, others are losing their tree cover at an alarming rate. The question is: where are these forests disappearing, and where are they making a comeback? The World’s Largest Forested Areas Forests still cover about 31% of Earth's land area, accounting for approximately 4.06 billion hectares . Russia holds the largest forest area, with over 815 million hectares , making up around 20% of the world’s total forest cover . Other countries with extensive forests include Brazil, Canada, the United States, and China. Some nations, like Suriname and Guyana, have maintained a remarkable percentage of their land covered by forests, with rates exceeding 90% . Why Forests Matter The benefits of forests go far be...

Where the Wind Blows Strongest: Exploring Global Wind Power Density Potential

When the Wind Becomes Power Wind has always been more than just a weather pattern. It’s movement. It’s momentum. And today, it’s electricity. Around the world, governments, engineers, and everyday homeowners are tapping into this natural resource as a cleaner alternative to fossil fuels. But before building turbines or writing policy, we need one crucial thing: a clear picture of where wind potential is most substantial. That’s where wind power density comes in. What Is Wind Power Density? Put simply, wind power density is a measure of how much wind energy is available at a specific location. It’s measured in watts per square meter (W/m²), and it factors in wind speed, air density, and how often the wind blows. The higher the number, the more efficient a site could be for generating wind power. This kind of data is essential for choosing turbine sites, estimating costs, and calculating return on investment. It also helps us make smarter, more sustainable choices globally. Where Is t...

Climate Change in Canada: How Seasons, Cities, and Daily Life Are Warming Up

Climate change isn’t just a distant concept—it’s reshaping environments and ways of life around the globe. In Canada, the effects are already becoming visible through longer summers, milder winters, and more extreme weather. According to data from the Climate Atlas of Canada , the coming decades will bring even more dramatic changes. This post takes a closer look at how Canada’s climate is projected to shift, how different regions might be affected, and what these changes could mean for agriculture, public health, and daily life across the country. Mean Annual Temperature: A Warming Nation The map below shows the 30-year average of daily mean temperatures across Canada , comparing historical data with projected temperatures for 2021–2050 and 2051–2080 under a high-emissions scenario. Projections show a consistent rise in average temperatures, especially across the Prairies, interior British Columbia, and the North. By mid-century, cities like Winnipeg, Calgary, and Yellowknife could...

The great Pacific garbage patch

Imagine sailing across the Pacific and finding not paradise but plastic: bottle caps, shattered toys, fishing nets. Just a hazy stretch of ocean full of human leftovers, not a towering pile of refuse. The Great Pacific Garbage Patch ( GPGP ) is a huge area where currents draw in plastic debris like a slow-moving whirlpool, which is its reality.   What Is the Great Pacific Garbage Patch? Contrary to popular belief, the GPGP isn’t a solid “island” of trash. It's more like a plastic soup spread across a vast area of the North Pacific Ocean. Think of it as the ocean’s slow blender — the North Pacific Subtropical Gyre — where rotating currents pull in floating debris and keep it swirling in the middle of nowhere. Located between California and Hawaii, the patch is actually two zones of waste accumulation: the Western Garbage Patch near Japan and the Eastern Garbage Patch between Hawaii and California. Together, they form what scientists call the GPGP. How Big Is It? Here’s the tricky ...

Zion: A Water-Carved, Time-Sculpted, Earth-Shaped National Park

There is something deeply earthy about being within Zion National Park. Whether you're looking out at the hardscrabble cliffs with your eye or listening to the Virgin River wind its way through narrow canyons, the park draws you into its rhythm—slowed, powerful, and full of life. In south-central Utah, Zion covers about 593.3 km² (229 square miles), making it one of the smaller national parks in terms of area—but don't let that fool you. It has towering sandstone monoliths, lush hanging gardens, and sheer canyons carved out over millions of years by wind and water. How Zion Was Formed: A Geologic Timeline The scenery of Zion began to take shape around 240 million years ago. This part of the earth at the time was a vast coastal plain and desert, with layer upon layer of sediment continuing to accumulate gradually. All those layers would harden into rock units later to be seen beautifully exposed through erosion in the present time. But the true sculptor of Zion is water—specif...

The Survival Gap: Why Women Live Longer in Every Corner of the World

Imagine telling your great-grandparents that most people today live past 65. They probably wouldn't believe you. According to research published in The Lancet , global life expectancy has more than doubled since 1900. Yet something even more fascinating emerges when we dig deeper: women consistently outlive men in almost every country on Earth. The maps below created by Vivid Maps tell this remarkable story. Watch as survival rates change from 1960 to 2015: The difference is striking, isn't it? According to the World Health Organization , women today outlive men by an average of 5 years globally. But why? The Science Behind the Gap The answer isn't as simple as you might think. According to research from Harvard Medical School , several factors contribute to this survival gap: Biological Advantages Women have a built-in edge. Their estrogen helps protect against heart disease until menopause, and they have stronger immune systems. Plus, that extra X chromosome provides bac...