Home / Business / Personal FinanceWhy we need more negative pressNZPA18 Nov, 2008 04:00 AM2 mins to readSubscribe to listenAccess to Herald Premium articles require a Premium subscription. Subscribe now to listen.Subscribe nowAlready a subscriber? Sign in hereListening to articles is free for open-access content—explore other articles or learn more about text-to-speech.SaveShareShare this articleCopy LinkEmailFacebookTwitter/XLinkedInRedditKEY POINTS: AdvertisementAdvertise with NZME.AdvertisementAdvertise with NZME.David Chaplin Photo: Warren Buckland SaveShareShare this articleCopy LinkEmailFacebookTwitter/XLinkedInRedditLatest from Personal FinancePremiumPropertyKāinga Ora sells Northcote site to Simplicity for build-to-rent apartmentsPersonal FinanceGovt cuts snippet of red tape associated with deathPremiumInvestmentInvestment manager Milford Funds boosts dividend despite profit dipSponsoredKiss cams and passion cohorts: how brands get famous in culture AdvertisementAdvertise with NZME.