Design an observation chart. Chart any changes in your plants. Give water in increments of a 1/2 cup. Keep track of the amount of water given.

Anyone who has ever planned to spend hours outside on a hot, sunny day has probably heard the advice to wear light colors. Pale colors reflect much of the Sun’s light, keeping their wearers cool. The ...

The most valuable fossils found in sediment cores are from tiny animals with a calcium carbonate shell, called foraminifera. One species of foraminifera lives in the icy waters of the Arctic above ...

Examine the set of graphs below for a given city. Read carefully the temperature and precipitation scales on the graphs. Review the biome information. Two biome choices are given for each set of ...

All of this extra carbon needs to go somewhere. So far, land plants and the ocean have taken up about 55 percent of the extra carbon people have put into the atmosphere while about 45 percent has ...

Smith’s work gave him an opportunity to test his hypothesis. To take advantage of fossil fuels, England’s industrialists didn’t just have to dig up coal, they had to transport it efficiently. Before ...

Nanga Parbat is the ninth tallest mountain in the world, but it is one of the most alluring for both mountain climbers and scientists. Located in northern Pakistan, Nanga Parbat is the westernmost of ...

× This page contains archived content and is no longer being updated. At the time of publication, it represented the best available science. Before widespread human settlement began to encroach on the ...

Have you ever wondered what it would be like to live in a different part of the world? What would the weather be like? What kinds of animals would you see? Which plants live there? By investigating ...

The Antarctic is in some ways the opposite of the Arctic. The Arctic is an ocean basin surrounded by land, with the sea ice corralled in the coldest, darkest part of the Northern Hemisphere. The ...

The shortest and youngest of the eight-thousand-meter peaks, Shisha Pangma is the only one located entirely within Tibet. (Of the others, three are entirely in Nepal and one in Pakistan. The rest sit ...

Land surface temperature is how hot the “surface” of the Earth would feel to the touch in a particular location. From a satellite’s point of view, the “surface” is whatever it sees when it looks ...