AFP Videographics advisory on Tuesday: CORONAVIRUS CHINA The head of the World Health Organization on Tuesday warned the novel coronavirus was a "very grave threat" for the world as he opened a conference to combat the epidemic. Still available: Videographic on the possible origins of the coronavirus. CHINA-HEALTH-VIRUS-WHO 3D MOTION VIDEOGRAPHIC IN ENGLISH AND FRENCH. INTERNATIONAL VERSIONS AVAILABLE. REISSUE Also still available: CHINA VIRUS MEDICS Videographic on medical isolation chambers. CORONAVIRUS EMERGENCE The coronavirus. CORONAVIRUS AIRPORTS Coronaviruses and health measures in place at airports. US ELECTION PRIMARIES Videographic on US primaries. US Democrats braced for a volatile, consequential primary on Tuesday in New Hampshire as leftist Bernie Sanders and youthful challenger Pete Buttigieg fight for pole position in the race for who faces Donald Trump in November's presidential election. US-POLITICS-VOTE 3D MOTION VIDEOGRAPHIC IN ENGLISH AND FRENCH. INTERNATIONAL VERSIONS AVAILABLE. REISSUE AUSTRALIA WEATHER Videographics on flooding and forest fires. Heavy rain has given hope to Australia's drought-stricken regions, but scientists warned Tuesday sustained falls were needed to end a years-long dry spell. AUSTRALIA-ENVIRONMENT-FLOOD-DROUGHT 3D MOTION VIDEOGRAPHICS IN ENGLISH AND FRENCH. INTERNATIONAL VERSIONS AVAILABLE. REISSUE Also available: WEATHER GLOBAL WARMING CLIMATE CHANGE THE AMAZON RAINFOREST Videographic on the Amazon rainforest. Deforestation in the Amazon rainforest in Brazil more than doubled in January compared with the previous year, according to official data. BRAZIL-AMAZON-ENVIRONMENT 3D MOTION VIDEOGRAPHIC IN ENGLISH AND FRENCH. INTERNATIONAL VERSIONS AVAILABLE. ORIGINAL IRAQ WEATHER SNOW Videographic on snow and snow flakes. Residents of Baghdad rushed to have snowball fights or take photographs Tuesday as the Iraqi capital woke carpeted in white by only its second snowfall in a century. IRAQ-WEATHER-SNOW 3D MOTION VIDEOGRAPHIC IN ENGLISH AND FRENCH. INTERNATIONAL VERSIONS AVAILABLE. REISSUE VALENTINE'S DAY Videographic on why we fall in love. To mark Valentine's Day, AFP has selected some of its most powerful recent images of love. MIDEAST-VALENTINES-CONFLICT-LIFESTYLE 3D MOTION VIDEOGRAPHIC IN ENGLISH AND FRENCH. INTERNATIONAL VERSIONS AVAILABLE. REISSUE Also: SOLAR ORBITER THE SUN AFP Videographics Jonathan Storey Tel: +33 (0)1 40 41 48 63 afp