Exploratour - Life on Earth
Heterotroph
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Image courtesy of Corel Photography
Click on image for full size
Image courtesy of Corel Photography
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Current Events
- Irish Chronicles Document Links Between Volcanoes and Weather
A study of over 40,000 written entries in Irish Annals and ice core measurements shows a strong corr...Read morexIrish Chronicles Document Links Between Volcanoes and Weather
A study of over 40,000 written entries in Irish Annals and ice core measurements shows a strong correlation between the occurrence of volcanic eruptions and extreme cold weather in Ireland over a 1200 year period. Data analyzed in this study cover the period from 431 to 1649, during which time up to 48 volcanic eruptions are identified in Greenland ice core records through deposition of volcanic sulfate in annual layers of ice. You can find the study (open access), published on 6 June 2013 in IOP Publishing's journal Environmental Research Letters, at http://iopscience.iop.org/1748-9326/8/2/024035/article. Find out more about how volcanoes can influence climate. - EF-5 Tornado in El Reno, Oklahoma Widest Ever Recorded in US
The EF-5 tornado that hit El Reno, Oklahoma on May 31st was the widest ever recorded in the US, acco...Read morexEF-5 Tornado in El Reno, Oklahoma Widest Ever Recorded in US
The EF-5 tornado that hit El Reno, Oklahoma on May 31st was the widest ever recorded in the US, according to the National Weather Service in Norman Oklahoma. The tornado, which remained on the ground for 40 minutes and reached 2.6 miles across (4.2 km), took the lives of 18 people including storm chasers Tim Samaras, Paul Samaras and Carl Young. For more information on the tornado, visit http://ow.ly/i/2hfDG. - Atmospheric CO2 Level Tops 400 ppm
During the week of May 13th, the CO2 level at the Mauna Loa Observatory in Hawaii topped 400 ppm rep...Read morexAtmospheric CO2 Level Tops 400 ppm
During the week of May 13th, the CO2 level at the Mauna Loa Observatory in Hawaii topped 400 ppm repeatedly. Daily levels of CO2 can vary due to weather, and there are seasonal trends as well. The level of atmospheric greenhouse gases continues to increase, now over 120 ppm since the Industrial Revolution began. For more on the Keeling Curve, see http://keelingcurve.ucsd.edu/. Find out more about greenhouse gases and warming.
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ExploraTour - Looking at the World in a Different Light
Even though the sleeping man is no longer on the bed, you can still see where he was lying down. The heat from his body warmed up the bed sheets which are now radiating infrared light toward your eyes....more
ExploraTour - Looking at the World in a Different Light
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ExploraTour - Looking at the World in a Different Light
Your eye is a wonderful detector of visible light. Different frequencies of light produce different sensations in the eye which we interpret as colors. Our eyes detect light by using light sensitive components...more
ExploraTour - Looking at the World in a Different Light
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ExploraTour - Looking at the World in a Different Light
This is a volcano on the island of Miyake in Japan. It has erupted, sending hot lava and ash into the air, a total of ten times. The time after one eruption until the next occurred was about twenty years...more
ExploraTour - Looking at the World in a Different Light
This is a picture of a galaxy in visible light. A galaxy is a large number of stars, some like our sun, some bigger, some smaller and all moving together through space. This galaxy is called Centaurus...more
ExploraTour - Looking at the World in a Different Light
This is a plant in Gary, Indiana where power is made. We use power to run things like television sets, radios, lights, and microwave ovens. The picture looks very strange because it was taken in infrared....moreShop Windows to the Universe
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