Ancient water wells reveal a prolonged drought in the lower Yellow River area about 2800 years ago

Water plays a significant role in the life cycle of plants. However, insufficient or excess of water can be detrimental and pose a serious threat to plants.

Preserving Water SourcesWater is one of the most important resources on Earth. We use it daily to drink, cook, clean, grow food, and have fun. But clean water isn’t unlimited. Only a small amount of the water on Earth is fresh and safe to use, so it’s super important to take care of it. Preserving water resources means protecting rivers, lakes, and groundwater from pollution and not wasting water. Learning to use water wisely helps people understand how to care for their environment and...

Deposition By GroundwaterAs groundwater moves through underground spaces and rock layers, it can carry dissolved minerals with it. When the water reaches open spaces like caves or slows down, it begins to deposit those minerals. Over time, this process builds up formations such as stalactites, which hang from the ceiling, and stalagmites, which rise from the ground. These structures grow slowly, sometimes taking thousands of years to form. Deposition by groundwater can also leave behind mineral...

The human body predominantly expels water through the urinary system. On average, an individual generates around 1.5 liters of urine each day. This amount can fluctuate based on how well a person is hydrated, but a critical minimum quantity of urine must be produced to ensure the body's proper functioning. Daily, the kidneys remove 600 to 1200 milliosmoles of dissolved substances, effectively excreting excess minerals and water-soluble toxins such as creatinine, urea, and uric acid from the...

Throughout its ~4.5 billion year history, the Earth has experienced periods of warming and cooling. However, the current drastic increase in global temperatures is well outside of the Earth’s cyclic norms, and evidence for human-caused global climate change is compelling. Paleoclimatology, the study of ancient climate conditions, provides ample evidence for human-caused global climate change by comparing recent conditions with those in the past.

Erosion By GroundwaterGroundwater is water that moves slowly through spaces in soil and rock beneath Earth’s surface. Over time, groundwater can cause erosion by dissolving certain types of rock, especially limestone. This type of erosion happens underground and leads to the formation of caves, sinkholes, and underground streams. When acidic groundwater moves through rock layers, it gradually widens cracks and creates large openings. As erosion continues, the roof of a cave may collapse,...