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ABOUT GLP
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GLP Integrity Policies: Privacy, Conflicts of Interest, Verification, Fact-Checking Standards and Corrections
Fair Use of Articles & Images
Copyright
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Is the Genetic Literacy Project a corporate ‘front’? GLP responds to ongoing false allegations from US Right to Know / Organic Consumers Association / SourceWatch / Baum Hedlund / Church of Scientology
Contact
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Global Gene Editing Regulation Tracker
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2026 Credibility and Reputation Report
The GLP is committed to full transparency. Download the report.
Global Gene Editing Regulation Tracker
Our interactive GLP global map explains the status of each country’s regulations for human and agricultural gene editing and gene drives.
GLP 2021 Annual Report
The GLP is committed to full transparency. Download our 2021 Annual Report.
Michael Erard
Is this ancient hashtag just a decoration or the first human symbol?
Science
|
May 4, 2018
About 100,000 years ago, ancient humans started etching lines and hashtag patterns onto red rocks in a South African cave ...
GLP ARTICLES
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TOPICS
Daily Food & Ag
Daily Human
Agriculture & Food
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Law, Regulations & Ethics
Science of the Future
Sustainability & Climate Change
SPECIAL SECTIONS
Academics Review
Anti-GMO Advocacy Funding Tracker
Bees & Butterflies
Global Gene Editing Regulation Tracker
GLP Biotech Profiles
GMO Beyond the Science
GMO FAQs
Infographics
Pesticides and Food
Sustainable Weed Management
Videos
RESEARCH
Search GLP Library
Browse Authors
Browse Sources
GLP RSS Feeds
ABOUT GLP
Mission, Financial Transparency and Governance
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GLP Integrity Policies: Privacy, Conflicts of Interest, Verification, Fact-Checking Standards and Corrections
Fair Use of Articles & Images
Copyright
Is the Genetic Literacy Project a corporate ‘front’? GLP responds to ongoing false allegations from US Right to Know / Organic Consumers Association / SourceWatch / Baum Hedlund / Church of Scientology
Write for the GLP
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