An archaeologist dates layers of soil using carbon-14 decay, which halves every 5730 years. If a sample has 12.5% of its original carbon-14 remaining, how many years ago was the layer formed?

Mon, 04 May 2026 23:44:20 +0000

**How Ancient Layers Tell Time: The Science Behind Carbon Dating** How often do researchers uncover stories hidden beneath the earth—secrets written in soil, measured not in years but in invisible decay? For archaeologists studying past civilizations, carbon-14 decay offers a window into prehistoric timelines, revealing how long ago a layer of soil was sealed beneath the surface. This method is transforming how scientists understand human history, climate shifts, and environmental change across the globe. With climate awareness rising and interest in deep-time data increasing, the ability to date ancient layers accurately is becoming more relevant than ever. --- **Why Is Carbon Dating Gaining Traction in the US?**