Vault Times — Maths in the news

Environment & science · The Independent — Climate

Heatwaves in high 40 degrees Celsius are ‘new normal’ for India and Pakistan, scientists warn

Climate crisis has tripled the likelihood of extreme heat occurring, study finds

Classroom maths questions Tailored prompts

Heatwaves in the high 40s Celsius are 'new normal'. If a city records 48°C and the previous normal was 40°C, what is the percentage increase?

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The climate crisis has tripled the likelihood of extreme heat. If the original likelihood was 5%, what is it now?

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If a heatwave in India lasts 10 days and the temperature is 47°C each day, what is the total number of degrees above 40°C across all days?

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Environment & science · BBC — Science & environment

A woolly solution to NI's peatland problems?

Could locally-sourced wool restore peatlands and reduce the carbon cost of conservation?

Classroom maths questions Tailored prompts

If locally-sourced wool costs £2.50 per kilogram and 200 kg are needed to restore one hectare of peatland, what is the total cost for 5 hectares?

Your answer

The carbon cost of conservation is reduced by using wool. If the original carbon cost was 120 tonnes and wool reduces it by 15%, how many tonnes are saved?

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A peatland area of 3.5 hectares requires 700 kg of wool. How many kilograms per hectare is that?

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Environment & science · The Guardian — Environment

‘Floats above the landscape’: the architect whose designs touch the earth lightly

Glenn Murcutt pioneered architecture that was sensitive to its environment, and accomodating to changing temperatures and wildlifeThe house teaches you things, Lynne Eastaway says. Today, a choir of cicadas fill the scrub with a rhythm that rises and falls. On other days, there may be visits from birds, goannas, ech…

Classroom maths questions Tailored prompts

The article mentions a 'choir of cicadas' whose rhythm rises and falls. If the cicada sound intensity rises from 30 decibels to 50 decibels, what is the increase in decibels?

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If the architect's design 'touches the earth lightly' and the house has a footprint of 120 m², but only 60 m² of that actually contacts the ground (the rest is on stilts), what fraction of the footprint contacts the ground?

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If the temperature changes from 25°C to 30°C over the day, what is the percentage increase in temperature?

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