Scientists agreed the rocky outcrops in a remote part of Quebec, Canada, were ancient. But were they really Earth’s oldest? New research suggests they are.

Research from two decades ago suggested the rocks could be as old as 4.3 billion years, placing them firmly in Earth 's infancy. Yet, other scientists challenged this, arguing that long-ago contaminants had skewed the dating methods,

Canadian researchers said they'd found the world's oldest rocks in northern Quebec. The find was controversial. But after more than a decade of hard work, they believe they've really proven it and are giving scientists a new glimpse into Earth's early history.