Director / Editor: Victor Teboul, Ph.D.

Looking inside ourselves and out at the world
Independent and neutral with regard to all political and religious orientations, Tolerance.ca® aims to promote awareness of the major democratic principles on which tolerance is based.

Teeth contain detailed records of lead contamination in humans and other primates

By Tanya M. Smith, Professor in the Australian Research Centre for Human Evolution & Griffith Centre for Social and Cultural Research, Griffith University
Christine Austin, Assistant Professor of Environmental Medicine and Public Health, Ichan School of Medicine

Like rings in tree trunks, the layers of our teeth carry a detailed record of our growth — and reveal lead contamination is common.

Read complete article

~	Togo: Reaction to opponent Agbéyomé Kodjo’s death while in exile

~	A look at South Africa’s media landscape ahead of the upcoming elections

~	A look inside the cyberwar between Israel and Hamas reveals the civilian toll

~	Animal behavior research is getting better at keeping observer bias from sneaking in – but there’s still room to improve

~	What’s in a VIN? How to decode the vehicle identification number, your car’s unique fingerprint

~	South Africa’s national student financial aid scheme has helped millions but is in trouble: here’s why

~	These local council results suggest Tory decimation at the general election ahead

~	Boris Johnson: if even the prime minister who introduced voter ID can forget his, do we need a rethink?

~	Bahrain: Human rights activist faces trial in further prosecution for protesting travel ban

~	Exploring New Zealand’s unique wildlife and learning about conservation efforts