Science Objects are two hour on-line interactive inquiry-based content modules that help teachers better understand the science content they teach. This Science Object, co-developed between NOAA and NSTA, is the last of four Science Objects in the Resources and Human Impact SciPack. It explores how human beings impact other species and the ecosystems in which they live. Due to our role in changing the environment, humans have a responsibility for preserving their habitat. There are a variety of approaches to reducing or reversing the human impact on the environment such as limiting population growth, reducing resource use, modifying population distribution, recycling resources, and the wise use of technology to solve problems. Managing resources by cleaning up polluted air, water, or soil or restoring depleted soil, forests, or fishing grounds can be difficult and costly but are critical for human health. Alternative energy resources such as wind, tides, and solar radiation can be utilized to reduce the consumption of fossil fuel-based energy sources. Social, political, and economic factors involve tradeoffs that will strongly influence the types and extent to which technologies will be developed and used.