At a time when climate and sustainability are increasingly pushed down the political, media and corporate agenda, communication professionals are facing growing pressure to deliver impact with fewer resources, shrinking attention and rising backlash. In this challenging context, self-organized spaces for professionals to exchange ideas, learn together, and share knowledge are becoming more important than ever.
In response to these challenges, CommsCOM., the WhatsApp professional community spearheaded by 10 Billion Solutions, has already brought together over 200 communications professionals from around the world within 72 hours of its launch (and continues to grow by the minute), with a strong focus on climate and sustainability communication.
CommsCOM. is designed as a two-way community, not a one-directional channel. It enables professionals to exchange insights, share job opportunities and resources, discuss real communication challenges and access curated expertise. The rapid growth of the community indicates a demand for practical spaces where professionals can exchange ideas and stay up-to-date in a rapidly changing communication landscape.
Climate and sustainability communication is no longer just about visibility. It is about credibility, timing and relevance in a fragmented information ecosystem shaped by algorithms, political polarisation and declining trust in institutions. As climate and sustainability issues move down priority lists, communicators need stronger professional networks, accurate and actionable signals, and spaces where experience and knowledge can be shared openly. CommsCOM. responds to this need by shifting the focus from broadcasting messages to building meaningful professional exchange.
As Mariana Castaño Cano, Founder & CEO of 10 Billion Solutions, says: “We launch CommsCOM. as an exchange space to help each other in a particularly challenging time so that climate and sustainability professionals can grow both their skills and the impact of their organisations. We will invest our resources to make sure this community is a useful and safe space where everyone feels welcome and finds value in sharing. Now more than ever, we need to tap into our collective intelligence.”
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About 10 Billion Solutions
10 Billion Solutions is a climate and sustainability communications consultancy working with organisations, companies and individuals willing to supercharge their communications. We support our partners in designing clear narratives, producing strategic content and engaging audiences around complex climate and sustainability challenges.
Our work spans strategic communications, editorial production, events and trainings, with a strong focus on growing credibility, clarity and impact. We collaborate with global and local actors across the climate and sustainability ecosystem, helping turn technical knowledge into communications that informs decisions, builds trust and supports action.
About Mariana Castaño Cano
Mariana Castaño Cano is a journalist, climate and sustainability communications expert, and Founder & CEO of 10 Billion Solutions. She works at the intersection of climate policy, strategic communications and public engagement, supporting organisations and institutions in navigating complex sustainability challenges through clear and credible narratives.
She has extensive experience in international climate processes, having worked across multiple UN climate and sustainability conferences, where she has led and moderated events, overseen complex communication operations, produced professional editorial and audiovisual content, and contributed to public debate on climate policy and real-world action. Mariana regularly collaborates with global climate initiatives, public institutions and private sector actors, bringing a strong focus on strategic clarity, editorial rigour and real-world impact.


