At 6 a.m. local time, the 1.5‑kilometre‑wide floating megacity Nova Oceanus lifted off its moorings off Mombasa, Kenya, marking the world’s first fully autonomous, carbon‑negative urban platform.

Designed by the Dutch‑based firm Oceanic Architects, the city can house up to one million residents, offering 2,200 hectares of residential, commercial and green spaces, all powered by an integrated renewable‑energy grid that harvests solar, wind and wave power.

According to the United Nations, sea levels have risen an average of 8 inches since 1990, and climate‑related displacement could affect 200 million people by 2050. Nova Oceanus’s carbon‑negative construction, which uses 30 percent recycled steel and bio‑concrete, is projected to offset 1.2 million tonnes of CO₂ annually – enough to erase the emissions of a mid‑size European city.

Kenyan President Dr. William Ruto hailed the project as ‘a beacon of African ingenuity,’ adding that the $2.5 billion venture, financed by a consortium of sovereign wealth funds and green bonds, will generate an estimated 12 000 jobs in construction, technology and maritime services.

Critics, however, warn that the city’s reliance on high‑tech infrastructure could exacerbate socioeconomic divides. ‘We must ensure affordable housing isn’t just a tagline,’ said Dr. Lila Ahmed, senior researcher at the World Bank’s Climate Housing Unit, noting that 35 percent of the initial units are earmarked for low‑income families.

With the inauguration ceremony still echoing across the Indian Ocean, officials plan to replicate the floating‑city model along vulnerable coastlines in Bangladesh and the Philippines, signalling a potential shift in how the global community tackles urbanisation under climate stress.