Russian Prime Minister Dmitry Medvedev delivers his speech at the opening ceremony of the International Year of the Periodic Table of Chemical Elements, in Moscow, Russia. The periodic table of chemical elements is having its 150th birthday, and U.N. scientific agency holds a year of events to celebrate.

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Russian Prime Minister Dmitry Medvedev delivers his speech at the opening ceremony of the International Year of the Periodic Table of Chemical Elements, in Moscow, Russia. The periodic table of chemical elements is having its 150th birthday, and U.N. scientific agency holds a year of events to celebrate.

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Russian Prime Minister Dmitry Medvedev delivers his speech at the opening ceremony of the International Year of the Periodic Table of Chemical Elements, in Moscow, Russia. The periodic table of chemical elements is having its 150th birthday, and U.N. scientific agency holds a year of events to celebrate.

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Russian Prime Minister Dmitry Medvedev delivers his speech at the opening ceremony of the International Year of the Periodic Table of Chemical Elements, in Moscow, Russia. The periodic table of chemical elements is having its 150th birthday, and U.N. scientific agency holds a year of events to celebrate.

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Russian Prime Minister Dmitry Medvedev, centre, speaks during the opening ceremony of the International Year of the Periodic Table of Chemical Elements, in Moscow, Russia. Russian Deputy Prime Minister Tatyana Golikova is at left and Russian Science and Higher Education Minister Mikhail Kotyukov is at right. The periodic table of chemical elements is having its 150th birthday, and U.N. scientific agency holds a year of events to celebrate.

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Russian Science and Higher Education Minister Mikhail Kotyukov speaks during the opening ceremony of the International Year of the Periodic Table of Chemical Elements, in Moscow, Russia. The periodic table of chemical elements is having its 150th birthday, and U.N. scientific agency holds a year of events to celebrate.

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British chemist, professor Sir Martyn Poliakoff arrives for the opening ceremony of the International Year of the Periodic Table of Chemical Elements, in Moscow, Russia. The periodic table of chemical elements is having its 150th birthday, and U.N. scientific agency holds a year of events to celebrate.

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PhosAgro CEO Andrei Guryev attends the opening ceremony of the International Year of the Periodic Table of Chemical Elements, in Moscow, Russia. The periodic table of chemical elements is having its 150th birthday, and U.N. scientific agency holds a year of events to celebrate.

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Rector of the Lomonosov Moscow State University Viktor Sadovnichy arrives for the opening ceremony of the International Year of the Periodic Table of Chemical Elements, in Moscow, Russia. The periodic table of chemical elements is having its 150th birthday, and U.N. scientific agency holds a year of events to celebrate.

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Russian Digital Development, Communications and Mass Media Minister Konstantin Noskov attends the opening ceremony of the International Year of the Periodic Table of Chemical Elements, in Moscow, Russia. The periodic table of chemical elements is having its 150th birthday, and U.N. scientific agency holds a year of events to celebrate.

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Russian Deputy Prime Minister Tatyana Golikova delivers her speech during the opening ceremony of the International Year of the Periodic Table of Chemical Elements, in Moscow, Russia. The periodic table of chemical elements is having its 150th birthday, and U.N. scientific agency holds a year of events to celebrate.

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Russian Deputy Prime Minister Tatyana Golikova attends the opening ceremony of the International Year of the Periodic Table of Chemical Elements, in Moscow, Russia. The periodic table of chemical elements is having its 150th birthday, and U.N. scientific agency holds a year of events to celebrate.

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From left, Russian Culture Minister Vladimir Medinsky, Education Minister Olga Vasilyeva, Deputy Prime Minister Tatyana Golikova, Prime Minister Dmitry Medvedev, Science and Higher Education Minister Mikhail Kotyukov and Digital Development, Communications and Mass Media Minister Konstantin Noskov attend the opening ceremony of the International Year of the Periodic Table of Chemical Elements, in Moscow, Russia. The periodic table of chemical elements is having its 150th birthday, and U.N. scientific agency holds a year of events to celebrate.

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Russian Prime Minister Dmitry Medvedev, centre, delivers his speech at the opening ceremony of the International Year of the Periodic Table of Chemical Elements, in Moscow, Russia. The periodic table of chemical elements is having its 150th birthday, and U.N. scientific agency holds a year of events to celebrate.

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Russian Prime Minister Dmitry Medvedev delivers his speech at the opening ceremony of the International Year of the Periodic Table of Chemical Elements, in Moscow, Russia. The periodic table of chemical elements is having its 150th birthday, and U.N. scientific agency holds a year of events to celebrate.

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Russian Prime Minister Dmitry Medvedev delivers his speech at the opening ceremony of the International Year of the Periodic Table of Chemical Elements, in Moscow, Russia. The periodic table of chemical elements is having its 150th birthday, and U.N. scientific agency holds a year of events to celebrate.

06.02.2019#5772763

A visitor takes pictures at the opening ceremony of the International Year of the Periodic Table of Chemical Elements, in Moscow, Russia. The periodic table of chemical elements is having its 150th birthday, and U.N. scientific agency holds a year of events to celebrate.

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