Earth secrets

Things we don not know for sure – how it’s happening, how was created, how it is. Questions that people do not know the answer!

Ancient Rainfall

On clues to the pattern of future rainfall in the Middle East — that might be buried in the past. Scientists at the Geological Survey in Israel hope to determine the last 4,000 years of rainfall in the Eastern Mediterranean region — by dissecting cave formations. When rainwater soaks into the Earth, it percolates downward, …

Ancient Rainfall Read More »

Water to Shore

In 1776, Ben Franklin left Philadelphia by ship for France. By carefully measuring water temperatures along the way, he was able to map the Gulf Stream. The motion of waves just moves a column or molecule of water up and down. Wouldn’t that mean that some water never hits a shore? All water — even …

Water to Shore Read More »

Volcanoes in Space

Two sorts of geologic features are found on most solid planets and moons in our solar system. They are impact craters and volcanoes. We talk about volcanoes on worlds beyond Earth … Spacecraft exploring our solar system have found volcanoes on other planets and moons. The tallest volcano in the solar system — Olympus Mons …

Volcanoes in Space Read More »

Depleted Uranium

A substance called “depleted uranium” is denser than lead and can penetrate metals more effectively — so it’s now being used in bombs and bullets. But it might affect human health and the environment long after a conflict is over. Depleted uranium shells left from US air strikes on Sarajevo. (c) AP/Hidajet delic. Photo courtesy …

Depleted Uranium Read More »

Genetic clocks steven benner

Genetic Clocks

A human’s genes provide a blueprint for making that human — and they can also tell time. We present the work of Steven Benner using genetic clocks and fossils to figure out what certain genes do… The human genome — or blueprint for life — is made up of thousands of genes . . . …

Genetic Clocks Read More »