Buy a sponsored article on SigmaEarth

Add SigmaEarth to your selection on the ranksource marketplace, submit your editorial brief, and ranksource coordinates the writing and then the publication with the SigmaEarth editorial team. The format, links and turnaround time are confirmed before your order is validated.

Publishing a sponsored article on SigmaEarth starts at $499. The price covers the writing or editorial review, the publication and the upkeep of the article. The exact price for your chosen format is shown on the ranksource marketplace.

The publication turnaround time on SigmaEarth is confirmed before your order, once the brief is validated by the editorial team. It depends on the requested format and the outlet's editorial calendar; ranksource tracks every step through to publication.

Yes. SigmaEarth includes a dofollow link to your site, up to 1 link per article, which passes SEO authority to your destination page.

Yes, SigmaEarth accepts content written by the advertiser, subject to its editorial approval. You can also entrust the writing to ranksource to match the outlet's editorial line.

SigmaEarth mainly publishes on Ecology & Sustainability & Research & Innovation. Your sponsored article must fit within these topics or a consistent editorial angle, agreed with the editorial team.

SigmaEarth is crawled by 16 AI engines, including GPTBot, ChatGPT-User & ClaudeBot. A sponsored article published on this media outlet can therefore be cited as a source in their generative answers, in addition to its visibility on Google: an AI visibility (GEO) lever that ranksource documents for every media outlet.

The article stays published on SigmaEarth for at least 36 months, with its link or links active for that entire period. This is a permanence guarantee that goes beyond a simple temporary link.