EXECUTI VE OFFICE OF TH E PRES DENT OFFICE OF SCIENCE AND TECHNOLOGY WASHINGTON D C 20506 January 26 1970 MEMORANDUM FOR Dr Daniel P Moynihan I am replying to your note querying whether we should become in­ volved in the issue of C02 and atmospheric temperature rise The more I get into this the more I find two classes of doorn-sayers with of course the silent majority in between One group says we will turn into snow-tripping mastodons because of the atmospheric dust and the other says we will have to grow gills to survive the increased ocean level due to the temperature rise from CO 2 Since the potential consequences are so large it is important that we find out what the true situation is I am asking Bob White of ESSA to devote some attention to the problem I have also been booked for a speech at an environmental session of a large engineering society and am using this as an example of the kind of problem they can tackle Hubert Heffner Deputy Director Copy to Harry Blaney ­ •