Serenaded by cicadas

Their song is produced by a complex vibrating membrane on their sides and a hollow resonant body cavity

Serenaded by cicadasEvery year in late June to mid-July, I await the return of the cicada. (Actually, they never left, but more on that in a moment.) For me, this is the song of summer. As I write, one is serenading me outside my office window. Long after the April rains have passed, May flowers have bloomed…

We can – and must – stop our plastic legacy

Countless animals ingest plastics and die. Do we care? Do we care that these plastics are now in the human food chain?

We can – and must – stop our plastic legacyWe often see news items about the environmental impact of single-use plastic straws. And we want to do something, which is good. Costa Rica plans to ban single-use plastics. At a recent G7 summit, the nations condemned single use straws and said they will discuss the matter at a future meeting. But no action has…

Don’t feed the bears! How parks get visitors to protect nature

Interpretive programs can improve visitors' attitudes about nature-friendly behaviour, but longer-term effects less certain: U of A researchers

Don’t feed the bears! How parks get visitors to protect natureBy Glen Hvenegaard and Elizabeth Halpenny University of Alberta After weeks of pandemic lockdown and closures, families keen on camping holidays and getting outdoors are relieved that many of our parks are reopening. Canada’s national parks partially opened on June 1 for day use; camping will be closed until at least June 21 while authorities assess safety.…

Boreal forests offer refuge to plants, animals as climate changes

U of A biologists lead effort to identify lakes, hills and peat lands where species stand a better chance of survival

Boreal forests offer refuge to plants, animals as climate changesNorth America’s boreal forests are warming and drying from climate change. But they still hold places that can offer refuge for plants and animals, according to University of Alberta scientists who have taken the lead in creating a guide to identify those areas. The information about these sheltered places known as climate-change refugia – including…
1 2 3 79