Rainfall

  • In 1908, the Forest Service established a system of experimental forests and ranges (EFRs) to be set aside for environmental…

    Spotlight – Luquillo Experimental Forest

  • Test your science knowledge with a word search.

    Word Search – Good to the Last Drip

  • Big-leaf mahogany is a tree species known for its beautiful wood. Over time, humans have cut down many big-leaf mahogany…

    Standing On the Shoulders of Giants (Time Warp Monograph Series) Vol. 1 No. 13

  • To ensure that big-leaf mahogany harvesting is sustainable, scientists and land managers must know the conditions in which mahogany grows.…

    Standing On the Shoulders of Giants: How Well Do Big-Leaf Mahogany Trees Grow in Different Conditions?

  • When snow melts or rain falls, some of the water runs off into streams or rivers. Most of the water,…

    Under Where? Underground Water and Its Contribution to Streams

  • If the temperature of a stream rises too high, the animals that live in the stream may find it difficult…

    Did They Make the Gradient? Climate and Stream Temperatures Now and Into the Future

  • Most rivers in the United States are now regulated. A regulated river is one whose flow is controlled by dams.…

    Toad-ally Awesome! Investigating the Relationship Between Flooding and Toad Reproduction Along the Rio Grande

  • Across the planet, different types of forests are found. One reason different forest types exist is because they grow under…

    Inquiry 1: What Kind of Forests Grow on Earth and How Do They Differ?

  • In the past, scientists had estimated how much rainfall is intercepted by trees growing in rural areas. The scientists in this study…

    Good to the Last Drip: How Trees Help to Reduce Pollution

  • In this FACTivity, you will build an insloping road to test your own model of erosion. Materials: Two large cardboard…

    FACTivity – Should Ditches Be Graded? (Spanish)