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Renewable energy

Renewable energy refers to power generated from natural sources that are continuously replenished on a human timescale, such as sunlight, wind, water, biomass, and geothermal heat. Unlike fossil fuels, which are finite and release carbon dioxide when burned, renewable energy sources are generally cleaner and more sustainable, offering a way to meet growing energy demands while reducing environmental impact and greenhouse gas emissions.

Solar energy harnesses sunlight using photovoltaic panels or solar thermal systems to generate electricity or heat. Wind energy uses turbines driven by air currents to produce power, often on land or offshore. Hydropower captures the energy of moving water, typically from rivers or dams, to turn turbines and generate electricity. Biomass energy is produced by burning or converting organic materials like wood, crop waste, or algae. Geothermal energy taps into the Earth’s internal heat to produce electricity or provide direct heating.

The transition to renewable energy is a central goal in efforts to combat climate change, improve energy security, and reduce air and water pollution. Advances in technology, declining costs, and supportive policies have accelerated the growth of renewable energy worldwide, making it an increasingly competitive and reliable alternative to fossil fuels. Integrating renewable sources into power grids, developing energy storage solutions, and modernizing infrastructure are key challenges as countries seek to build more resilient and sustainable energy systems for the future.

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Earth & Climate News

October 31, 2025

Researchers in Japan have revealed how some gourds draw pollutants into their fruits. The secret lies in a protein that carries contaminants through the plant sap. By manipulating this protein’s structure, scientists hope to breed crops that ...
From mini-brains to spider-inspired gloves and wolf apple coatings, scientists are turning eerie-sounding experiments into real innovations that could revolutionize health and sustainability. Lab-grown brain organoids may replace animal testing, ...
Global scientists warn that humanity is on the verge of crossing irreversible climate thresholds, with coral reefs already at their tipping point and polar ice sheets possibly beyond recovery. The Global Tipping Points Report 2025 reveals how rising ...
Researchers at QUT uncovered how corals reattach to reefs through a three-phase process involving tissue transformation, anchoring, and skeleton formation. Differences among species reveal why some corals grow and attach faster than others. ...
Beneath the ice of Antarctica’s Weddell Sea, scientists discovered a vast, organized city of fish nests revealed after the colossal A68 iceberg broke away. Using robotic explorers, they found over ...
Extinction rates are not spiraling upward as many believe, according to a large-scale study analyzing 500 years of data. Researchers found that species losses peaked about a century ago and have decreased since, with different drivers shaping past ...
The Southern Ocean absorbs nearly half of all ocean-stored human CO2, but its future role is uncertain. Despite models predicting a decline, researchers found that freshening surface waters are currently keeping deep CO2 trapped below. This ...
A team of researchers has developed a floral-scented fungus that tricks mosquitoes into approaching and dying. The fungus emits longifolene, a natural scent that irresistibly draws them in. It’s harmless to humans, inexpensive to produce, and ...
New research shows that hippos lived in central Europe tens of thousands of years longer than previously thought. Ancient DNA and radiocarbon dating confirm they survived in Germany’s Upper Rhine Graben during a milder Ice Age phase. Closely ...
Scientists have uncovered that glaciers can temporarily cool the air around them, delaying some effects of global warming. This self-cooling, driven by katabatic winds, is nearing its peak and will likely reverse in the next two decades. Once ...
For the first time, scientists have seen a subduction zone actively breaking apart beneath the Pacific Northwest. Seismic data show the oceanic plate tearing into fragments, forming microplates in a slow, step-by-step collapse. This process, once ...
Scientists have discovered that El Niño and La Niña could become far more powerful and predictable as the planet warms. By 2050, the tropical Pacific may hit a tipping point, locking ENSO into strong, rhythmic oscillations that synchronize with ...

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