There's a tantalising ambiguity to 'petrichor', the earthy aroma produced after a long-awaited shower. Humans are particularly sensitive to petrichor. Is it the smell of the earth? Or of rain? It's neither, and also both – because petrichor is released when the rains hit dry soil. This week, it is this sense of here, there and everywhere that we channel through 'petrichor'.

We encounter the abstract symbolism embedded into the design of the Bait Ur Raiyan mosque in Bangladesh. We read about the Whitney Biennial, which brings together a little bit of everything in offering a survey of American art. Crossing the seas, we zoom into the nitty-gritties of running art collectives by learning about ZEST, a group of young artists in Southampton.

Petrichor needs collaboration to work – without water or earth, there is no mysterious aroma. We channel its gentle invitation to think and work together, speaking to art collector Patrick Sun, who is on a quest to support the queer movement through artistic dialogue. Turner Prize-winning artist Mark Leckey speaks of transmitting shared ideas across disciplines in his new collaboration with choreographer Oona Doherty.

The rain's freshness is redolent of new beginnings. Its earthy scent also sparks nostalgia, reminding us of the warmth and conviviality of past memories. Petrichor makes us feel things, many things, all at once.