New research suggests the global decline in wildlife is connected to an increase in human trafficking and child slavery.
Ecologists say the shortage of wild animals means that in many countries more labour is now needed to find food.
Children are often used to fill this need for cheap workers, especially in the fishing industry.
The decline in species is also helping the proliferation of terrorism and the destabilisation of regions.
According to a study in the journal, Science, the harvesting of wild animals from the sea and the land is worth $400bn annually and supports the livelihoods of 15% of the world’s population.
Even low levels of light in bedrooms may stop breast cancer drugs from working, US researchers have warned.
Animal tests showed light, equivalent to that from street lamps, could lead to tumours becoming resistant to the widely used drug Tamoxifen.
The study, published in the journal Cancer Research, showed the light affected sleep hormones, which in turn altered cancer cell function.
UK experts said it was an intriguing finding, but not proven in people.
Tamoxifen has transformed the treatment of breast cancer by extending lives and increasing survival times.
It stops the female hormone oestrogen fuelling the growth of tumours although the cancerous cells may eventually become resistant to the drug.
Debris from the Air Algérie flight that went missing over northern Mali early Thursday was reportedly found about 50 kilometers from the Mali – Burkina Faso border, according to both Malian and Burkina Faso sources.
According to Gen. Gilbert Diendere, a close aide to Burkina Faso President Blaise Compaore, the wreckage was found about 50 kilometers (31 miles) from the border of Burkina Faso near the village of Boulikessi in Mali, south of the Malian city of Gao.
Malian state television also said the wreckage was found near the village of Boulikessi, adding that President Ibrahim Boubacar Keïta is due to visit the site of the crash on Friday.
Algeria’s transport minister also said the plane’s remains had apparently been found. French officials could not confirm the discovery late Thursday night.
“We sent men with the agreement of the Mali government to the site and they found the wreckage of the plane with the help of the inhabitants of the area,” said Gen. Diendere, who is heading the crisis committee set up to investigate the flight.
“They found human remains and the wreckage of the plane totally burnt and scattered,” he said.
He told reporters that rescuers went to the area after they had heard from a resident that he saw the plane go down 80 kilometers (50 miles) southwest of Malian town of Gossi.