While climate change is the definitive issue of our time, few know that it has always shaped history. From natural disasters to the fall of empires, the rise of pandemics, mass migrations, the ebb and flow of trade, social upheaval and even war, climate has always played a role. The father-son duo of Sangeeth and Zac Varghese, who’ve co-authored the book ‘Hidden Links – How Random Historical Events Shaped Our World’, speak to All Indians Matter.