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.

What’s in tattoo ink? My team’s chemical analysis found ingredients that aren’t on the label and could cause allergies

By John Swierk, Assistant Professor, Chemistry, Binghamton University, State University of New York

Tattoos are an incredibly common form of permanent self-expression that date back thousands of years. Most tattoo artists follow strict health and sanitation regulations, so you might assume that tattoo inks are carefully regulated, too.

But as work done by my team of chemistry researchers suggests, up…

Read complete article

~	Lebanon: Ministerial Decision Advances Justice

~	A new dash for copper is underway – how will it play out? Expert Q&A

~	Global: UN Special Rapporteur is right to raise human rights concerns about carbon markets

~	On X, Elon Musk pushes a campaign against a Brazilian Supreme Court Justice

~	US Universities Should Respect Right to Protest

~	Burkina Faso: UN rights office deeply alarmed at reported killing of 220 villagers

~	A new dash for copper is underway - how will it play out? Expert Q&A

~	Why does it feel so cold in the UK right now – and when will it warm up?

~	Artificial sweetener could harm your gut and the microbes that live there – new study

~	Gaza war: ‘no evidence’ of Hamas infiltration of UN aid agency, says report – but US and UK dither on funding while famine takes hold