Paving stones that soak up pollutants are being developed by researchers at
Mitsubishi Materials in Tokyo. The slabs have a concrete base topped with a
1-centimetre layer of a mixture containing titanium dioxide, zeolite and either
sand, crushed quartz or ground glass. The titanium absorbs ultraviolet light
from the Sun and allows this energy to transform nitrogen oxides into harmless
salts.
More from 91av
Explore the latest news, articles and features
Popular articles
Trending 91av articles
1
Largest-ever octopus was great white shark of invertebrate predators
2
QBox theory may offer glimpse of reality deeper than quantum realm
3
Symptoms of early dementia reversed by bespoke treatment plans
4
The audacious quest to light up the sky with artificial auroras
5
Gravity's strength measured more reliably than ever before
6
Exercise advice for long covid may be doing more harm than good
7
How autoimmune conditions can unexpectedly drive mental illness
8
This mesmerising Cornish time-travel film is not to be missed
9
Can you slow ageing with your diet? A new book gives it a go
10
Surprising male G-spot found in most detailed study of the penis yet
