Kintsugi is the repair of a ceramic item, perhaps a bowl or vase, with a bright gold seam. Like wabi sabi, kintsugi reflects a view that wear and use of an object adds value rather than detracts. Rather than try to hide the past damage and the repair instead it is celebrated and enhanced. A bowl repaired with kintsugi might be seen as more valuable than one that had never been broken.

An ebook might reload the same every time. A book, instead, accumulates its previous use in its pages and appearance — the slight bend in the pages, discoloration from fingerprints or sunlight, creases in the spine at frequently visited pages, a pencil mark here and there. The book itself hints at the story of its own life. A well-thumbed secondhand book can be a beautiful thing.

You may have noticed some modern kintsugi in Kylo Ren's helmet.

Kintsugi

Heat islands are urban areas that can have higher temperatures than surrounding rural areas with more greenery.

Heat islands are caused by a number of factors including:

the types of materials we use in cities for buildings, pavement, and roads that can absorb more heat than natural surfaces such as leaves or grass

human additions to the sun's heat such as air conditioning, vehicles, cooking, or machinery

that shapes of our cities that may restrict airflow to carry heat away

the mass of our buildings that can absorb heat and release it gradually, even through the night

More natural, often rural areas with greenery may reflect more light, release moisture and provide shade.

There are ways to help reduce the effect of heat islands such as planting more urban trees, or using green roofs.

Deciduous trees have the handy feature of providing shade for a house in the summer while letting light through in the winter when the leaves fall.

A study using 2015 data found that "doubling tree cover in European cities could cut the number of heat-related deaths during summer months by nearly 40 per cent."

Heat islands

How far away is the storm? The flash-to-bang method can help.

When lightning is made by a storm the rapid heating and expansion of the air create the thunderclap. But because sound travels slower than light, there's a gap between seeing the lightning and hearing the thunder it produced. Using Distance = speed x time, by counting the seconds from seeing the lightning you can easily estimate how far away it is.

Conveniently, the speed of sound in air is about 330 metres/second. So depending on your unit preference:

every 3s you wait the thunder travels about 1 km

every 5s you wait the thunder travels about 1 mile

Give it a try at a safe distance from your next lightning storm.

Also see: thunderclap or rumble, thunder clouds, dirty thunderstorm

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Flash-to-bang method