In New Zealand, around 20 percent of houses are on floodplains.
Jacob Hawkins is building as many Lego sets as he can in this year's World Vision 40-Hour Challenge.
The mercury climbed to 25.7C in Heretaunga/Hastings on Monday.
Simon Watts was speaking at a biodiversity conference when the protesters chipped in.
"It's time for a fresh start on how we engage with farmers and processors to work on biogenic methane."
Resources Minister Shane Jones has dismissed what he calls "eco-rabble", calling protesters hypocrites for shutting it down.
They want to know how a changing climate and more frequent extreme weather events will affect sevengill sharks in Fiordland.
They want to know if the corals can survive increasing sea temperatures.
The fast-growing Kiwi cleantech industry could be a high-value export earner.
