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Did the Mayan civilization end because of climate change?
science.howstuffworks.com/environmental/green-science/climate-change-end-mayan-civilization.htm
Over the years, many theories have been advanced about why the once-mighty Mayan civilization fell. But a newer one is getting attention: Was it because of climate change?
5 Invasive Species That Might Conquer the World
science.howstuffworks.com/environmental/green-science/5-invasive-species-conquer-world.htm
Invasive species are found around the globe, and can be damaging to the world's ecosystems. Some invasive species seem almost unstoppable like these five.
What Is a Lone Wolf?
animals.howstuffworks.com/mammals/lone-wolf.htm
A lone wolf either purposely leaves a pack or accidentally gets separated. Learn how a wolf becomes a lone wolf, and how a lone wolf lives on its own.
Has Earth reached its carrying capacity?
science.howstuffworks.com/environmental/green-science/earth-carrying-capacity.htm
Carrying capacity is the idea that sustainability requires balance. Learn about carrying capacity and human population.
How to Volunteer to Teach English
money.howstuffworks.com/economics/volunteer/opportunities/volunteer-to-teach-english.htm
Ever wonder how to volunteer to teach English? Visit HowStuffWorks to learn how to volunteer to teach English.
How to Volunteer for the Parks and Recreation Department
money.howstuffworks.com/economics/volunteer/opportunities/volunteer-parks-recreation.htm
Volunteering for your local parks and recreation department offers myriad opportunities. Learn how to get started volunteering with parks and recreation.
Top 5 Tips for Choosing a Daily Body Moisturizer
health.howstuffworks.com/skin-care/daily/tips/5-tips-for-choosing-a-daily-body-moisturizer.htm
Choosing a daily body moisturizer is important to your skin's health. Visit HowStuffWorks to see the top 5 tips for choosing a daily body moisturizer.
Can you moisturize too much?
health.howstuffworks.com/skin-care/moisturizing/basics/moisturize-too-much.htm
Can you moisturize too much? Read about over-moisturizing and whether you can use too much moisturizer.
Could meditating before or during surgery decrease your pain?
health.howstuffworks.com/wellness/natural-medicine/alternative/meditating-during-surgery.htm
Meditating before surgery or during surgery helps many people manage their pain. Learn about meditating before or during surgery how it can lower stress.
How Does a Hippo Make Its Own Sunscreen?
animals.howstuffworks.com/mammals/hippo-sunscreen.htm
Hippo sunscreen is actually the thick sweat that hippos produce to protect their skin from the sun. Learn why red hippo sunscreen is such powerful stuff.