Archive for the ‘Ecology & Environment’ Category
Help researchers monitor and understand light pollution with a simple smartphone app
Guest post by Christopher Kyba
How many stars can you see when you look up at the night sky? The answer depends a bit on your vision and a lot on where you live. The bright sky over cities reduces the contrast between the stars and the spaces between them, making them difficult or impossible to see. It’s similar to how the noise from traffic makes it hard to hear singing birds.
This phenomenon is known as light pollution and is of concern for both ecological and human health reasons. For example, the croaking of frogs and toads is a nighttime breeding ritual and artificial right disrupts this activity, reducing populations. Similarly, birds that migrate or hunt at night can have their navigation severely affected by artificial light. Read the rest of this entry »
PhenoCam and Season Spotter: Using Digital Photography to Educate Youth and Advance Climate Change Science
If a tree falls in a forest and no one is around to hear it, does it make a sound? This question has engaged philosophers through the ages in discussions regarding observation and the knowledge of reality. Scientists in the PhenoCam Network are also interested in what goes on in forests when no one is around to observe them but are less interested in the presence or absence of noise as trees fall but in knowing the timing of when trees flower, leaf, or fruit. Read the rest of this entry »