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The Medicines We Leave Behind: How Pharmaceuticals Are Entering Britain's Rivers Every Day Every day across the United Kingdom, millions of people take prescription medicines to control blood pressure, treat infections, manage diabetes, ease pain, reduce depression, prevent seizures and improve countless other medical conditions.  These medicines save lives, improve quality of life and form one of the greatest achievements of modern healthcare. Yet few people consider what happens after the medicine has done its job. The answer begins not in a pharmacy or hospital, but in the human body. Many medicines are only partially absorbed before being processed by the liver and kidneys.  Depending on the drug, a significant proportion may leave the body in urine either unchanged or as metabolites—chemical by-products created during metabolism. Every flush of a toilet begins a journey through the nation's sewer network toward wastewater treatment works and, ultimately, Britain's rive...

How Much Water Does a Data Centre Use? Data centres power the internet—from streaming and cloud storage to AI tools—but behind the scenes, they also consume significant amounts of water.  So how much are we really talking about, and why does it matter? Why Data Centres Use Water At their core, data centres are filled with servers that generate heat 24/7. To prevent overheating, operators rely on cooling systems—and many of these use water. There are two main cooling approaches: • Air cooling: Uses chilled air (less water, more electricity) • Liquid cooling: Uses water directly or indirectly (more efficient, but water-intensive) Water is especially common in evaporative cooling systems, where heat is removed through evaporation—similar to how sweat cools your body. So, How Much Water Are We Talking About? The answer varies depending on size, climate, and technology—but here are realistic benchmarks: A medium-to-large data centre can use 300,000 to 5 million gallons (1–19 million li...