#wanttoknow! – the Tomorrow Today viewer question comes from Amula Dorley in Monrovia, Liberia
Some plants can suck up and store heavy metals. They can help clean up contaminated soil and extract valuable metals from the ground by a process of phytomining - all without a pickaxe or shovel.
Earthworms help recuperate soil and enrich it with much needed minerals. But environmentalists are concerned as earthworms have come under threat from intensive use of manure and acidic soil.
Ever more land is being covered by concrete, deforested, farmed, over-fertilized or polluted. For World Soil Day, it seems there is still much to be done to convince people that soil is not just a load of dirt.
Recent polls have placed Keiko Fujimori and Pedro Pablo Kuczynski in a tie prior to Peru's run-off vote. Fujimori - daughter of an ex-president currently in jail - has tried to fight her father's soiled reputation.
© 2017 Deutsche Welle |
Legal notice |
| Mobile version