Nature editors remember and celebrate the life of Peter Higgs, the theorist behind the Higgs boson, who died on Monday, aged 94. Also, Iran releases jailed conservationists and a Javan tiger that might not be extinct. Nature editors remember and celebrate the life of Peter Higgs, the theorist behind the Higgs boson, who died on Monday, aged 94. Also, Iran releases jailed conservationists and a Javan tiger that might not be extinct.