"AthirRatbram" - Ancient fire ritual has positive impact on environment: ScientistsThe 'Athirathram' ritual being performed in Panjal near Thrissur in April, 2011. Photo: By Special Arrangement

The 'Athirathram' ritual being performed in Panjal near Thrissur in April, 2011. Photo: By Special Arrangement 4,000 year old fire r...