This United Nations OHRLLS news briefing documents how the climate crisis — reinforced by the latest IPCC findings — is already disproportionately harming the world’s 91 most vulnerable nations (least developed, landlocked and small island developing states), threatening food security, livelihoods and even national survival through sea‑level rise and extreme weather; it also highlights economic strain from COVID‑19 and the shortfall in the $100 billion climate finance pledge. Included in PART 1 (Our Agency & Climate Urgency) and the Call to Action chapter, the article substantiates the book’s premise that climate impacts have arrived and frames the urgent need for financed adaptation and investment in resilience and sustainable solutions — the types of purposeful investment opportunities the book advocates.