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thematic lessons

Climate change and biodiversity 2: finding solutio..

Different scientists are concerned about different problems: ecologists worry about the diminishing biodiversity. Rightly so: the famous biologist Paul Ehrlich of Stanford University calculated in 2017 that today 50% less animals walk, swim, fly, creep on this planet than a… read more

Climate change and biodiversity

We hear much talking about climate change – and we experience changes in our local weather, probably resulting from the global changes. The other actual and global problem, loss of biodiversity, gets less attention, but may be more severe in… read more

Trees and climate (the lesson)

Read Trees change their anatomy as drought persists Trees depend on climate as every living creature does, but they also  can adapt to change, and may be help prevent climate change. Questions: The observed changes: 1/ narrower water-carrying vessels, 2/… read more

Grasslands, the lesson

The big ecosystems on Earth where people can live are mainly forests and grasslands. Grassland, savanna,  is where our species started and lived maybe 2 million years. Many natural grasslands are now agricultural areas (many forests too). Somehow people seem… read more

Can urban gardeners benefit ecosystems while keepi..

Do you live in a city? Do you have a garden? Or a balcony full of plants? Many people do not realize that it is possible to grow food in a city garden or even on a balcony. Urban gardens… read more