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!

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 Continue »

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 Continue »

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 Continue »

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 Continue »

Scroll to Top