STEM Professionals' Blog


The GLOBE International STEM professionals Network (GISN) Blog is an online collaborative effort where scientists associated with GLOBE post their thoughts, comments, and philosophies about a variety of science topics.

GLOBE strongly encourages positive and productive discussions to further advance the scientific understanding of all involved with The GLOBE Program.




In most scientific research an important test is whether the results of an experiment can be repeated, typically repeated by another lab and research group. A result that cannot be confirmed in this way is generally viewed as invalid. This is a great test for controlled experiments where virtually identical experimental conditions may be achieved. In Earth science research involving observations of the natural world, experimental conditions cannot be reproduced. For environmental research the standard must switch for repeatable to intercomparable – capable of being compared. Research...


Posted in: GLOBE Science Topics: Backyard Science General Science GLOBE Protocols Earth System Science Investigation Areas: Atmosphere Hydrosphere Pedosphere (Soil) Biosphere Primary Audience: Alumni Scientists Students Teachers Trainers

Yesterday, I visited Bell Multicultural High School and Lincoln Middle School, which share a campus near my home. It was inspiring, and I saw good science teaching with students doing research experiments dealing with bioremediation of soils. In discussions, I found myself talking about GLOBE and the many aspects of what the Program offers. Students were experimenting with plant uptake of soil contaminants and were planning to take water samples from the Anacostia River bordering the area where they had collected soil samples. Their insight into the soil could be greatly expanded...


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A heat lamp and reflector socket with a spring clamp may be purchased on-line for as little as $26. The amount of time required to dry samples depends on many things including the wetness of the initial sample, the soil characteristics, the relative humidity, and the temperature to which the sample is heated. GLOBE protocols specify that samples are not to be heated above 105 o C. In using a heat lamp, the temperature to which the sample is heated depends on the wattage of the bulb and the distance between the heat lamp and the sample bag. I have tried drying a sample using this...


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Phenology: Community Storytelling in Action (This is a continuation of my blog about Rising Voices. Click  here  to see the first blog entry in this series.) "How healthy is our reef?" The following day, after meeting Aunty Pua Case and hearing about the sacredness of Mauna Kea and touring the Mauna Loa Observatory, we went to the Ka’upulehu Interpretive Center to learn about place-based learning in Hawai’i. There, we met Aunty Lei - another powerful educator and leader who talked about the educational center that they created in their community and some of the...


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Blog Two (This is a continuation of my blog about Rising Voices. Click here to see the first blog entry in this series.) Part One: Mauna Kea “Let’s do something that is right for our mountain, and our people, and our mountain.” Location: Pu’uhuluhul, base of the Mauna Kea Mountain, en route to Mauna Loa Observatory We arrived at the base between two mountains: Mauna Kea and Mauna Loa. We met Aunty Pua Case, who shared the importance of Mauna Kea to the people of Hawai’i and led us through a cultural protocol to recognize the sacredness of the space. Similar to ...


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